<SUBMISSION>
<ACCESSION-NUMBER>0000950005-01-000170
<TYPE>SC 13G/A
<PUBLIC-DOCUMENT-COUNT>1
<FILING-DATE>20010213
<SUBJECT-COMPANY>
<COMPANY-DATA>
<CONFORMED-NAME>ADFORCE INC
<CIK>0001080764
<ASSIGNED-SIC>7374
<IRS-NUMBER>770505214
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>SC 13G/A
<ACT>34
<FILE-NUMBER>005-56907
<FILM-NUMBER>1538368
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>ADFORCE INC
<STREET2>10101 NORTH DEANZA BLVD SUITE 210
<CITY>CUPERTINO
<STATE>CA
<ZIP>95014
<PHONE>4088733680
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>10101 NORTH DEANZA BLVD SUITE 210
<CITY>CUPERTINO
<STATE>CA
<ZIP>95014
</MAIL-ADDRESS>
</SUBJECT-COMPANY>
<FILED-BY>
<COMPANY-DATA>
<CONFORMED-NAME>HUMMER WINBLAD VENTURE PARTNERS III LP
<CIK>0001083548
<ASSIGNED-SIC>0000
<IRS-NUMBER>943272225
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>SC 13G/A
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>2 SOUTH PARK 2ND FL
<CITY>SAN FRANCISCO
<STATE>CA
<ZIP>94107
<PHONE>4159799600
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>HUMMER WINBLAD VENTURE PARTNERS III LP
<STREET2>2 SOUTH PARK 2ND FL
<CITY>SAN FRANCISCO
<STATE>CA
<ZIP>94107
</MAIL-ADDRESS>
</FILED-BY>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>0001.txt
<DESCRIPTION>SCHEDULE 13G/A
<TEXT>


                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  Schedule 13G
                                 (Rule 13d-102)

 INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1 (b),
         (c) AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO 13d-2 (b)
                                (Amendment No. 1)


                                  AdForce, Inc.
--------------------------------------------------------------------------------
                                (Name of Issuer)


                                  Common Stock
--------------------------------------------------------------------------------
                         (Title of Class of Securities)


                                   006867 10 5
--------------------------------------------------------------------------------
                                 (CUSIP Number)


                                December 31, 2000
--------------------------------------------------------------------------------
             (Date of Event Which Requires Filing of this Statement)

Check the  appropriate box to designate the rule pursuant to which this Schedule
is filed:

           [ ]       Rule 13d-1(b)

           [ ]       Rule 13d-(c)

           [X]       Rule 13d-1(d)


                         (Continued on following pages)


                               Page 1 of 13 Pages
                       Exhibit Index Contained on Page 12

<PAGE>


<TABLE>
<S>                                                               <C>                   <C>
----------------------------------------------------------                     --------------------------------------
CUSIP NO. 006867 10 5                                             13 G                  Page 2 of 13 Pages
----------------------------------------------------------                     --------------------------------------

------------ ---------------------------------------------------------------------------------------------------------

1            NAME OF REPORTING
             SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                      Hummer Winblad Venture Partners II, L.P. ("HWVP II")
                      Tax ID Number:
------------ ---------------------------------------------------------------------------------------------------------

2            CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                                    (a)   [ ]           (b)    [X]
------------ ---------------------------------------------------------------------------------------------------------

3            SEC USE ONLY
------------ ---------------------------------------------------------------------------------------------------------

4            CITIZENSHIP OR PLACE OF ORGANIZATION
             Delaware
------------------------------------ -------- ------------------------------------------------------------------------

                                     5        SOLE VOTING POWER
             NUMBER OF                        0 shares.
              SHARES
           BENEFICIALLY
      OWNED BY EACH REPORTING
              PERSON
               WITH
                                     -------- ------------------------------------------------------------------------

                                     6        SHARED VOTING POWER
                                              0 shares.
                                     -------- ------------------------------------------------------------------------

                                     7        SOLE DISPOSITIVE POWER
                                              0 shares.
                                     -------- ------------------------------------------------------------------------

                                     8        SHARED DISPOSITIVE POWER
                                              0 shares.
------------ ---------------------------------------------------------------------------------------------------------

9            AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
             REPORTING PERSON                                                                       0
------------ ---------------------------------------------------------------------------------------------------------

10           CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
             EXCLUDES CERTAIN SHARES                                                                [ ]
------------ ---------------------------------------------------------------------------------------------------------

11           PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                    0.0%
------------ ---------------------------------------------------------------------------------------------------------

12           TYPE OR REPORTING PERSON
                                                                                                    PN
------------ ---------------------------------------------------------------------------------------------------------
</TABLE>


<PAGE>


<TABLE>
<S>                                                               <C>                   <C>
----------------------------------------------------------                     --------------------------------------
CUSIP NO. 006867 10 5                                             13 G                  Page 3 of 13 Pages
----------------------------------------------------------                     --------------------------------------

------------ ---------------------------------------------------------------------------------------------------------

1            NAME OF REPORTING
             SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                      Hummer Winblad Technology Fund II, L.P. ("HWTF II")
                      Tax ID Number:
------------ ---------------------------------------------------------------------------------------------------------

2            CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                                    (a)   [ ]           (b)    [X]
------------ ---------------------------------------------------------------------------------------------------------

3            SEC USE ONLY
------------ ---------------------------------------------------------------------------------------------------------

4            CITIZENSHIP OR PLACE OF ORGANIZATION
             Delaware
------------------------------------ -------- ------------------------------------------------------------------------

                                     5        SOLE VOTING POWER
             NUMBER OF                        0 shares.
              SHARES
           BENEFICIALLY
      OWNED BY EACH REPORTING
              PERSON
               WITH
                                     -------- ------------------------------------------------------------------------

                                     6        SHARED VOTING POWER
                                              0 shares.
                                     -------- ------------------------------------------------------------------------

                                     7        SOLE DISPOSITIVE POWER
                                              0 shares.
                                     -------- ------------------------------------------------------------------------

                                     8        SHARED DISPOSITIVE POWER
                                              0 shares.
------------ ---------------------------------------------------------------------------------------------------------

9            AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
             REPORTING PERSON                                                                       0
------------ ---------------------------------------------------------------------------------------------------------

10           CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
             EXCLUDES CERTAIN SHARES                                                                [ ]
------------ ---------------------------------------------------------------------------------------------------------

11           PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                    0.0%
------------ ---------------------------------------------------------------------------------------------------------

12           TYPE OR REPORTING PERSON
                                                                                                    PN
------------ ---------------------------------------------------------------------------------------------------------
</TABLE>


<PAGE>


<TABLE>
<S>                                                               <C>                   <C>
----------------------------------------------------------                     --------------------------------------
CUSIP NO. 006867 10 5                                             13 G                  Page 4 of 13 Pages
----------------------------------------------------------                     --------------------------------------

------------ ---------------------------------------------------------------------------------------------------------

1            NAME OF REPORTING
             SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                      Hummer Winblad Technology Fund IIA, L.P. ("HWTF IIA")
                      Tax ID Number:
------------ ---------------------------------------------------------------------------------------------------------

2            CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                                    (a)   [ ]           (b)    [X]
------------ ---------------------------------------------------------------------------------------------------------

3            SEC USE ONLY
------------ ---------------------------------------------------------------------------------------------------------

4            CITIZENSHIP OR PLACE OF ORGANIZATION
             Delaware
------------------------------------ -------- ------------------------------------------------------------------------

                                     5        SOLE VOTING POWER
             NUMBER OF                        0 shares.
              SHARES
           BENEFICIALLY
      OWNED BY EACH REPORTING
              PERSON
               WITH
                                     -------- ------------------------------------------------------------------------

                                     6        SHARED VOTING POWER
                                              0 shares.
                                     -------- ------------------------------------------------------------------------

                                     7        SOLE DISPOSITIVE POWER
                                              0 shares.
                                     -------- ------------------------------------------------------------------------

                                     8        SHARED DISPOSITIVE POWER
                                              0 shares.
------------ ---------------------------------------------------------------------------------------------------------

9            AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
             REPORTING PERSON                                                                       0
------------ ---------------------------------------------------------------------------------------------------------

10           CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
             EXCLUDES CERTAIN SHARES                                                                [ ]
------------ ---------------------------------------------------------------------------------------------------------

11           PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                    0.0%
------------ ---------------------------------------------------------------------------------------------------------

12           TYPE OR REPORTING PERSON
                                                                                                    PN
------------ ---------------------------------------------------------------------------------------------------------
</TABLE>


<PAGE>


<TABLE>
<S>                                                               <C>                   <C>
----------------------------------------------------------                     --------------------------------------
CUSIP NO. 006867 10 5                                             13 G                  Page 5 of 13 Pages
----------------------------------------------------------                     --------------------------------------

------------ ---------------------------------------------------------------------------------------------------------

1            NAME OF REPORTING
             SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                      Hummer Winblad Equity Partners II, L.L.C. ("HWEP II")
                      Tax ID Number:
------------ ---------------------------------------------------------------------------------------------------------

2            CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                                    (a)   [ ]           (b)    [X]
------------ ---------------------------------------------------------------------------------------------------------

3            SEC USE ONLY
------------ ---------------------------------------------------------------------------------------------------------

4            CITIZENSHIP OR PLACE OF ORGANIZATION
             Delaware
------------------------------------ -------- ------------------------------------------------------------------------

                                     5        SOLE VOTING POWER
                                              0 shares.
             NUMBER OF               -------- ------------------------------------------------------------------------
              SHARES
           BENEFICIALLY              6        SHARED VOTING POWER
      OWNED BY EACH REPORTING                 0 shares.
              PERSON
               WITH
                                     -------- ------------------------------------------------------------------------

                                     7        SOLE DISPOSITIVE POWER
                                              0 shares.
                                     -------- ------------------------------------------------------------------------

                                     8        SHARED DISPOSITIVE POWER
                                              0 shares.
------------ ---------------------------------------------------------------------------------------------------------

9            AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
             REPORTING PERSON                                                                       0
------------ ---------------------------------------------------------------------------------------------------------

10           CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
             EXCLUDES CERTAIN SHARES                                                                [ ]
------------ ---------------------------------------------------------------------------------------------------------

11           PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                    0.0%
------------ ---------------------------------------------------------------------------------------------------------

12           TYPE OR REPORTING PERSON
                                                                                                    OO
------------ ---------------------------------------------------------------------------------------------------------
</TABLE>


<PAGE>


<TABLE>
<S>                                                               <C>                   <C>
----------------------------------------------------------                     --------------------------------------
CUSIP NO. 006867 10 5                                             13 G                  Page 6 of 13 Pages
----------------------------------------------------------                     --------------------------------------

------------ ---------------------------------------------------------------------------------------------------------

1            NAME OF REPORTING
             SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                      John R. Hummer ("Hummer")
                      Tax ID Number:
------------ ---------------------------------------------------------------------------------------------------------

2            CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                                    (a)   [ ]           (b)    [X]
------------ ---------------------------------------------------------------------------------------------------------

3            SEC USE ONLY
------------ ---------------------------------------------------------------------------------------------------------

4            CITIZENSHIP OR PLACE OF ORGANIZATION
             U.S. Citizen
------------------------------------ -------- ------------------------------------------------------------------------

                                     5        SOLE VOTING POWER
                                              0 shares
             NUMBER OF               -------- ------------------------------------------------------------------------
              SHARES
           BENEFICIALLY              6        SHARED VOTING POWER
      OWNED BY EACH REPORTING                 0 shares.
              PERSON
               WITH
                                     -------- ------------------------------------------------------------------------

                                     7        SOLE DISPOSITIVE POWER
                                              0 shares.
                                     -------- ------------------------------------------------------------------------

                                     8        SHARED DISPOSITIVE POWER
                                              0 shares.
------------ ---------------------------------------------------------------------------------------------------------

9            AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
             REPORTING PERSON                                                                       0
------------ ---------------------------------------------------------------------------------------------------------

10           CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
             EXCLUDES CERTAIN SHARES                                                                [ ]
------------ ---------------------------------------------------------------------------------------------------------

11           PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                    0.0%
------------ ---------------------------------------------------------------------------------------------------------

12           TYPE OR REPORTING PERSON
                                                                                                    IN
------------ ---------------------------------------------------------------------------------------------------------
</TABLE>


<PAGE>


<TABLE>
<S>                                                               <C>                   <C>
----------------------------------------------------------                     --------------------------------------
CUSIP NO. 006867 10 5                                             13 G                  Page 7 of 13 Pages
----------------------------------------------------------                     --------------------------------------

------------ ---------------------------------------------------------------------------------------------------------

1            NAME OF REPORTING
             SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                      Ann L. Winblad ("Winblad")
                      Tax ID Number:
------------ ---------------------------------------------------------------------------------------------------------

2            CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                                    (a)   [ ]           (b)    [X]
------------ ---------------------------------------------------------------------------------------------------------

3            SEC USE ONLY
------------ ---------------------------------------------------------------------------------------------------------

4            CITIZENSHIP OR PLACE OF ORGANIZATION
             U.S. Citizen
------------------------------------ -------- ------------------------------------------------------------------------

                                     5        SOLE VOTING POWER
                                              0 shares.
             NUMBER OF               -------- ------------------------------------------------------------------------
              SHARES
           BENEFICIALLY              6        SHARED VOTING POWER
      OWNED BY EACH REPORTING                 0 shares.
              PERSON
               WITH
                                     -------- ------------------------------------------------------------------------

                                     7        SOLE DISPOSITIVE POWER
                                              0 shares.
                                     -------- ------------------------------------------------------------------------

                                     8        SHARED DISPOSITIVE POWER
                                              0 shares.
------------ ---------------------------------------------------------------------------------------------------------

9            AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
             REPORTING PERSON                                                                       0
------------ ---------------------------------------------------------------------------------------------------------

10           CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
             EXCLUDES CERTAIN SHARES                                                                [ ]
------------ ---------------------------------------------------------------------------------------------------------

11           PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                    0.0%
------------ ---------------------------------------------------------------------------------------------------------

12           TYPE OR REPORTING PERSON
                                                                                                    IN
------------ ---------------------------------------------------------------------------------------------------------
</TABLE>


<PAGE>


<TABLE>
<S>                                                               <C>                   <C>
----------------------------------------------------------                     --------------------------------------
CUSIP NO. 006867 10 5                                             13 G                  Page 8 of 13 Pages
----------------------------------------------------------                     --------------------------------------

------------ ---------------------------------------------------------------------------------------------------------

1            NAME OF REPORTING
             SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON
                      Mark Gorenberg ("Gorenberg")
                      Tax ID Number:
------------ ---------------------------------------------------------------------------------------------------------

2            CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                                                    (a)   [ ]           (b)    [X]
------------ ---------------------------------------------------------------------------------------------------------

3            SEC USE ONLY
------------ ---------------------------------------------------------------------------------------------------------

4            CITIZENSHIP OR PLACE OF ORGANIZATION
             U.S. Citizen
------------------------------------ -------- ------------------------------------------------------------------------

                                     5        SOLE VOTING POWER
                                              0 shares.
             NUMBER OF               -------- ------------------------------------------------------------------------
              SHARES
           BENEFICIALLY              6        SHARED VOTING POWER
      OWNED BY EACH REPORTING                 0 shares.
              PERSON
               WITH
                                     -------- ------------------------------------------------------------------------
                                     -------- ------------------------------------------------------------------------

                                     7        SOLE DISPOSITIVE POWER
                                              0 shares.
                                     -------- ------------------------------------------------------------------------
                                     -------- ------------------------------------------------------------------------

                                     8        SHARED DISPOSITIVE POWER
                                              0 shares.
------------ ---------------------------------------------------------------------------------------------------------

9            AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
             REPORTING PERSON                                                                       0
------------ ---------------------------------------------------------------------------------------------------------

10           CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9)
             EXCLUDES CERTAIN SHARES                                                                [ ]
------------ ---------------------------------------------------------------------------------------------------------

11           PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                                                    0.0%
------------ ---------------------------------------------------------------------------------------------------------

12           TYPE OR REPORTING PERSON
                                                                                                    IN
------------ ---------------------------------------------------------------------------------------------------------
</TABLE>


<PAGE>


-------------------------------                     ----------------------------
CUSIP NO. 006867 10 5                  13 G              Page 9 of 13 Pages
-------------------------------                     ----------------------------

         This statement amends the amended  Statement on Schedule 13(G) filed by
         the Reporting  Persons.  Only those items as to which there is a change
         are included in this report.

ITEM 4.           OWNERSHIP

                  The following information with respect to the ownership of the
                  Common  Stock  of  the  issuer  by  the  persons  filing  this
                  Statement is provided as of December 31, 2000:

                    (a)  Amount beneficially owned:

                         See Row 9 of cover page for each Reporting Person.

                    (b)  Percent of Class:

                         See Row 11 of cover page for each Reporting Person.

                    (c)  Number of shares as to which such person has:

                           (i)   Sole power to vote or to direct the vote:

                                 See Row 5 of cover page for each Reporting
                                 Person.

                           (ii)  Shared power to vote or to direct the vote:

                                 See Row 6 of cover page for each Reporting
                                 Person.

                           (iii) Sole power to dispose or to direct the
                                 disposition of:

                                 See Row 7 of cover page for each Reporting
                                 Person.

                           (iv)  Shared power to dispose or to direct the
                                 disposition of:

                                 See Row 8 of cover page for each Reporting
                                 Person.


<PAGE>


-------------------------------                     ----------------------------
CUSIP NO. 006867 10 5                  13 G              Page 10 of 13 Pages
-------------------------------                     ----------------------------

ITEM 5.           OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS

                  If this statement is being filed to report the fact that as of
                  the date  hereof  the  reporting  person  has ceased to be the
                  beneficial  owner of more  than five  percent  of the class of
                  securities, check the following:  [X] Yes


<PAGE>


-------------------------------                     ----------------------------
CUSIP NO. 006867 10 5                  13 G              Page 11 of 13 Pages
-------------------------------                     ----------------------------

                                   SIGNATURES


                  After  reasonable  inquiry and to the best of my knowledge and
belief,  I certify  that the  information  set forth in this  statement is true,
complete and correct.

Date:  February 9, 2001

                                    /s/  John  R.   Hummer
                                    --------------------------------------------
                                    John R. Hummer, individually,  and on behalf
                                    of HWVP II, in his  capacity  as a  managing
                                    member of HWEP II,  the  general  partner of
                                    HWVP  II,  on  behalf  of  HWTF  II,  in his
                                    capacity  as a  managing  member of HWEP II,
                                    the general partner of HWTF II, on behalf of
                                    HWTF IIA, in his capacity as managing member
                                    of HWEP II, the general partner of HWTF IIA,
                                    and on behalf of HWEP II in his  capacity as
                                    a managing member thereof.


                                     /s/ Ann L. Winblad
                                     -------------------------------------------
                                     Ann L. Winblad


                                     /s/ Mark Gorenberg
                                     -------------------------------------------
                                     Mark Gorenberg


<PAGE>

-------------------------------                     ----------------------------
CUSIP NO. 006867 10 5                  13 G              Page 12 of 13 Pages
-------------------------------                     ----------------------------

                                  EXHIBIT INDEX

                                                                    Found on
                                                                  Sequentially
Exhibit                                                           Numbered Page
-------                                                           -------------

Exhibit A:  Agreement of Joint Filing                                  13





<PAGE>


-------------------------------                     ----------------------------
CUSIP NO. 006867 10 5                  13 G              Page 13 of 13 Pages
-------------------------------                     ----------------------------

                                    EXHIBIT A

                            Agreement of Joint Filing

                  The  undersigned  hereby agree that a single  Schedule 13G (or
any amendment  thereto)  relating to the Common Stock of AdForce,  Inc. shall be
filed on behalf of each of the  undersigned  and that  this  Agreement  shall be
filed as an exhibit to such Schedule 13G.

Date:  February 9, 2001

                                    /s/  John  R.   Hummer
                                    --------------------------------------------
                                    John R. Hummer, individually,  and on behalf
                                    of HWVP II, in his  capacity  as a  managing
                                    member of HWEP II,  the  general  partner of
                                    HWVP  II,  on  behalf  of  HWTF  II,  in his
                                    capacity  as a  managing  member of HWEP II,
                                    the general partner of HWTF II, on behalf of
                                    HWTF IIA, in his capacity as managing member
                                    of HWEP II, the general partner of HWTF IIA,
                                    and on behalf of HWEP II in his  capacity as
                                    a managing member thereof.




                                   /s/ Ann L. Winblad
                                   ---------------------------------------------
                                   Ann L. Winblad




                                   /s/ Mark Gorenberg
                                   ---------------------------------------------
                                   Mark Gorenberg

</TEXT>
</DOCUMENT>
</SUBMISSION>
