<DOCUMENT>
<TYPE>SC 13G
<SEQUENCE>1
<FILENAME>b44239kmsc13g.txt
<DESCRIPTION>LIBERTY WANGER ACORN/ANSWERTHINK, INC.
<TEXT>
<PAGE>
                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                  SCHEDULE 13G


                    Under the Securities Exchange Act of 1934

                          (Amendment No.               )*
                                        ---------------

                                ANSWERTHINK, INC.
--------------------------------------------------------------------------------
                                (Name of Issuer)

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

                                    036916104
                  ---------------------------------------------
                                 (CUSIP Number)

                                 August 31, 2002
         --------------------------------------------------------------
             (Date of Event Which Requires Filing of this Statement)


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

                               [x] Rule 13d-1(b)
                               [ ] Rule 13d-1(c)
                               [ ] Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).


                               Page 1 of 10 pages

SEC 1745 (2/92)
<PAGE>
-------------------                                           ------------------
CUSIP No. 036916104                 13G                       Page 2 of 10 Pages
-------------------                                           ------------------


--------------------------------------------------------------------------------
1    NAME OF REPORTING PERSON
     S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

          Liberty Wanger Asset Management, L.P.  36-3820584

--------------------------------------------------------------------------------
2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

          Not Applicable                                                 (a) [ ]
                                                                         (b) [ ]

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

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

          Delaware

--------------------------------------------------------------------------------
                       5    SOLE VOTING POWER

     NUMBER OF                  None

       SHARES         ----------------------------------------------------------
                       6    SHARED VOTING POWER
    BENEFICIALLY
                                6,690,000
      OWNED BY
                      ----------------------------------------------------------
        EACH           7    SOLE DISPOSITIVE POWER

     REPORTING                  None

       PERSON         ----------------------------------------------------------
                       8    SHARED DISPOSITIVE POWER
        WITH
                                6,690,000

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

            6,690,000

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

           Not Applicable                                   [ ]

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

           14.1 %

--------------------------------------------------------------------------------
12   TYPE OF REPORTING PERSON*

           IA

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

                      *SEE INSTRUCTION BEFORE FILLING OUT!
<PAGE>
-------------------                                           ------------------
CUSIP No. 036916104                 13G                       Page 3 of 10 Pages
-------------------                                           ------------------


--------------------------------------------------------------------------------
1    NAME OF REPORTING PERSON
     S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

          WAM Acquisition GP, Inc.

--------------------------------------------------------------------------------
2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

          Not Applicable                                                 (a) [ ]
                                                                         (b) [ ]

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

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

          Delaware

--------------------------------------------------------------------------------
                       5    SOLE VOTING POWER

     NUMBER OF                  None

       SHARES         ----------------------------------------------------------
                       6    SHARED VOTING POWER
    BENEFICIALLY
                                6,690,000
      OWNED BY
                      ----------------------------------------------------------
        EACH           7    SOLE DISPOSITIVE POWER

     REPORTING                  None

       PERSON         ----------------------------------------------------------
                       8    SHARED DISPOSITIVE POWER
        WITH
                                6,690,000

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

            6,690,000

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

           Not Applicable                                        [ ]

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

           14.1 %

--------------------------------------------------------------------------------
12   TYPE OF REPORTING PERSON*

           CO

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

                      *SEE INSTRUCTION BEFORE FILLING OUT!

<PAGE>
-------------------                                           ------------------
CUSIP No. 036916104                 13G                       Page 4 of 10 Pages
-------------------                                           ------------------


--------------------------------------------------------------------------------
1    NAME OF REPORTING PERSON
     S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

          Liberty Acorn Trust

--------------------------------------------------------------------------------
2    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

          Not Applicable                                                 (a) [ ]
                                                                         (b) [ ]

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

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

          Massachusetts

--------------------------------------------------------------------------------
                       5    SOLE VOTING POWER

     NUMBER OF                  None

       SHARES         ----------------------------------------------------------
                       6    SHARED VOTING POWER
    BENEFICIALLY
                                6,690,000
      OWNED BY
                      ----------------------------------------------------------
        EACH           7    SOLE DISPOSITIVE POWER

     REPORTING                  None

       PERSON         ----------------------------------------------------------
                       8    SHARED DISPOSITIVE POWER
        WITH
                                6,690,000

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

            6,690,000

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

           Not Applicable                                        [ ]

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

           14.1 %

--------------------------------------------------------------------------------
12   TYPE OF REPORTING PERSON*

           IV

--------------------------------------------------------------------------------
<PAGE>

Item 1(a)      Name of Issuer:

                    Answerthink, Inc.


Item 1(b)      Address of Issuer's Principal Executive Offices:

                    1001 Brickell Bay Drive
                    Suite 3000
                    Miami, FL  33131


Item 2(a)      Name of Person Filing:

                    Liberty Wanger Asset Management, L.P. ("WAM")
                    WAM Acquisition GP, Inc., the general partner of WAM
                    ("WAM GP")
                    Liberty Acorn Trust ("Acorn")


Item 2(b)      Address of Principal Business Office:

                    WAM, WAM GP and Acorn are all located at:

                    227 West Monroe Street, Suite 3000
                    Chicago, Illinois  60606


Item 2(c)      Citizenship:

                    WAM is a Delaware limited partnership; WAM
                    GP is a Delaware corporation; Acorn is a
                    Massachusetts business trust.

Item 2(d)      Title of Class of Securities:

                    Common Stock

Item 2(e)      CUSIP Number:

                    036916104

Item 3         Type of Person:

                    (d)  Acorn is an Investment Company under section 8 of the
                         Investment Company Act.

                    (e)  WAM is an Investment Adviser registered under section
                         203 of the Investment Advisers Act of 1940; WAM GP is
                         the General Partner of the Investment Adviser.


                               Page 5 of 10 pages
<PAGE>

Item 4         Ownership (at August 31, 2002):

                    (a)  Amount owned "beneficially" within the meaning of rule
                         13d-3:

                         6,690,000

                    (b)  Percent of class:

                         14.1 % (based on 47,370,052 shares outstanding as of
                         July 31, 2002)

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

                           (i)  sole power to vote or to direct the vote: none
                          (ii)  shared power to vote or to direct the vote:
                                6,690,000
                         (iii)  sole power to dispose or to direct the
                                disposition of: none
                          (iv)  shared power to dispose or to direct disposition
                                of: 6,690,000

Item 5         Ownership of Five Percent or Less of a Class:

                    Not Applicable

Item 6         Ownership of More than Five Percent on Behalf of Another Person:

                    The shares reported herein have been acquired on behalf of
                    discretionary clients of WAM, including Acorn. Persons other
                    than WAM and WAM GP are entitled to receive all dividends
                    from, and proceeds from the sale of, those shares. Acorn is
                    the only such person known to be entitled to all dividends
                    from, and all proceeds from the sale of, shares reported
                    herein to the extent of more than 5% of the class.

Item 7         Identification and Classification of the Subsidiary Which
               Acquired the Security Being Reported on by the Parent Holding
               Company:

                    Not Applicable

Item 8         Identification and Classification of Members of the Group:

                    Not Applicable

Item 9         Notice of Dissolution of Group:

                    Not Applicable


                               Page 6 of 10 pages

<PAGE>

Item 10        Certification:

                    By signing below I certify that, to the best of my knowledge
               and belief, the securities referred to above were acquired and
               are held in the ordinary course of business and were not acquired
               and are not held for the purpose of or with the effect of
               changing or influencing the control of the issuer of the
               securities and were not acquired and are not held in connection
               with or as a participant in any transaction having that purpose
               or effect.


                               Page 7 of 10 pages
<PAGE>

                                    Signature
                                    ---------

         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: September 12, 2002


                    The undersigned corporation, on the date above written,
                    agrees and consents to the joint filing on its behalf of
                    this Schedule 13G in connection with its beneficial
                    ownership of the security reported herein.

                                        WAM Acquisition GP, Inc.
                                          for itself and as general partner of
                                          LIBERTY WANGER ASSET MANAGEMENT, L.P.


                                        By: /s/ Bruce H. Lauer
                                           -------------------------------------
                                           Bruce H. Lauer
                                           Senior Vice President and Secretary

                    The undersigned corporation, on the date above written,
                    agrees and consents to the joint filing on its behalf of
                    this Schedule 13G in connection with its beneficial
                    ownership of the security reported herein.

                                        LIBERTY ACORN TRUST


                                        By: /s/ Bruce H. Lauer
                                           -------------------------------------
                                           Bruce H. Lauer
                                           Vice President, Treasurer and
                                           Secretary

                               Page 8 of 10 pages
<PAGE>

                                  Exhibit Index
                                  -------------

Exhibit 1      Joint Filing Agreement dated as of September 12, 2002 by and
               among Liberty Wanger Asset Management, L.P., WAM Acquisition GP,
               Inc. and Liberty Acorn Trust


                               Page 9 of 10 pages

</TEXT>
</DOCUMENT>
