<SUBMISSION>
<ACCESSION-NUMBER>0000902664-06-002249
<TYPE>SC 13G
<PUBLIC-DOCUMENT-COUNT>1
<FILING-DATE>20061006
<DATE-OF-FILING-DATE-CHANGE>20061006
<SUBJECT-COMPANY>
<COMPANY-DATA>
<CONFORMED-NAME>CSK AUTO CORP
<CIK>0001051848
<ASSIGNED-SIC>5531
<IRS-NUMBER>860765798
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>0131
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>SC 13G
<ACT>34
<FILE-NUMBER>005-55039
<FILM-NUMBER>061133341
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>645 E MISSOURI AVENUE
<CITY>PHOENIX
<STATE>AZ
<ZIP>85012
<PHONE>6022659200
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>645 E MISSOURI AVENUE
<CITY>PHOENIX
<STATE>AZ
<ZIP>85012
</MAIL-ADDRESS>
</SUBJECT-COMPANY>
<FILED-BY>
<COMPANY-DATA>
<CONFORMED-NAME>GLG Partners LP
<CIK>0001289643
<IRS-NUMBER>000000000
<STATE-OF-INCORPORATION>X0
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>SC 13G
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>1 CURZON STREET
<CITY>LONDON
<STATE>X0
<ZIP>W1J 5HB
<PHONE>44 20 7016 7000
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>1 CURZON STREET
<CITY>LONDON
<STATE>X0
<ZIP>W1J 5HB
</MAIL-ADDRESS>
</FILED-BY>
<DOCUMENT>
<TYPE>SC 13G
<SEQUENCE>1
<FILENAME>sc13g.txt
<DESCRIPTION>CSK AUTO CORPORATION
<TEXT>
                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                             ----------------------

                                  SCHEDULE 13G

                    Under the Securities Exchange Act of 1934

                           (Amendment No. _________)*

                              CSK Auto Corporation
                                (Name of Issuer)

                     Common Stock, $0.01 par value per share
                         (Title of Class of Securities)

                                    125965103
                                 (CUSIP Number)

                               September 28, 2006
             (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)
     [X]  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 purposes 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 12 Pages


<PAGE>


CUSIP No. 125965103                   13G                  Page 2 of 12 Pages

--------------------------------------------------------------------------------
     (1)    NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

            GLG Partners LP
--------------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
                                                               (a)  [X]
                                                               (b)  [ ]
--------------------------------------------------------------------------------
     (3)    SEC USE ONLY
--------------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION

            England
--------------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                    0
SHARES         _________________________________________________________________

BENEFICIALLY   (6)  SHARED VOTING POWER
                    2,750,568 shares of Common Stock
OWNED BY       _________________________________________________________________

EACH           (7)  SOLE DISPOSITIVE POWER
                    0
REPORTING      _________________________________________________________________

PERSON WITH:  (8)   SHARED DISPOSITIVE POWER
                    2,750,568 shares of Common Stock
--------------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
            2,750,568 shares of Common Stock
--------------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
                                                                          [ ]
--------------------------------------------------------------------------------
     (11)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (9)
            6.28%
--------------------------------------------------------------------------------
     (12)   TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
            PN
--------------------------------------------------------------------------------


<PAGE>


CUSIP No. 125965103                   13G                  Page 3 of 12 Pages

--------------------------------------------------------------------------------
     (1)    NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

            GLG Partners Limited
--------------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
                                                               (a)  [X]
                                                               (b)  [ ]
--------------------------------------------------------------------------------
     (3)    SEC USE ONLY
--------------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION

            England
--------------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                    0
SHARES         _________________________________________________________________

BENEFICIALLY   (6)  SHARED VOTING POWER
                    2,750,568 shares of Common Stock
OWNED BY       _________________________________________________________________

EACH           (7)  SOLE DISPOSITIVE POWER
                    0
REPORTING      _________________________________________________________________

PERSON WITH:   (8)  SHARED DISPOSITIVE POWER
                    2,750,568 shares of Common Stock
--------------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
            2,750,568 shares of Common Stock
--------------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
                                                                          [ ]
--------------------------------------------------------------------------------
     (11)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (9)
            6.28%
--------------------------------------------------------------------------------
     (12)   TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
            OO
--------------------------------------------------------------------------------


<PAGE>


CUSIP No. 125965103                   13G                  Page 4 of 12 Pages

--------------------------------------------------------------------------------
     (1)    NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

            Noam Gottesman
--------------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
                                                               (a)  [X]
                                                               (b)  [ ]
--------------------------------------------------------------------------------
     (3)    SEC USE ONLY
--------------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION

            United States
--------------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                    0
SHARES         _________________________________________________________________

BENEFICIALLY   (6)  SHARED VOTING POWER
                    2,750,568 shares of Common Stock
OWNED BY       _________________________________________________________________

EACH           (7)  SOLE DISPOSITIVE POWER
                    0
REPORTING      _________________________________________________________________

PERSON WITH:   (8)  SHARED DISPOSITIVE POWER
                    2,750,568 shares of Common Stock
--------------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
            2,750,568 shares of Common Stock
--------------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
                                                                          [ ]
--------------------------------------------------------------------------------
     (11)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (9)
            6.28%
--------------------------------------------------------------------------------
     (12)   TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
            IN
--------------------------------------------------------------------------------


<PAGE>


CUSIP No. 125965103                   13G                  Page 5 of 12 Pages

--------------------------------------------------------------------------------
     (1)    NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

            Pierre Lagrange
--------------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
                                                               (a)  [X]
                                                               (b)  [ ]
--------------------------------------------------------------------------------
     (3)    SEC USE ONLY
--------------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION

            Belgium
--------------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                    0
SHARES         _________________________________________________________________

BENEFICIALLY   (6)  SHARED VOTING POWER
                    2,750,568 shares of Common Stock
OWNED BY       _________________________________________________________________

EACH           (7)  SOLE DISPOSITIVE POWER
                    0
REPORTING      _________________________________________________________________

PERSON WITH:   (8)  SHARED DISPOSITIVE POWER
                    2,750,568 shares of Common Stock
--------------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
            2,750,568 shares of Common Stock
--------------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
                                                                          [ ]
--------------------------------------------------------------------------------
     (11)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (9)
            6.28%
--------------------------------------------------------------------------------
    (12)    TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
            IN
--------------------------------------------------------------------------------


<PAGE>


CUSIP No. 125965103                   13G                  Page 6 of 12 Pages

--------------------------------------------------------------------------------
     (1)    NAMES OF REPORTING PERSONS
            I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS (ENTITIES ONLY)

            Emmanuel Roman
--------------------------------------------------------------------------------
     (2)    CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)
                                                               (a)  [X]
                                                               (b)  [ ]
--------------------------------------------------------------------------------
     (3)    SEC USE ONLY
--------------------------------------------------------------------------------
     (4)    CITIZENSHIP OR PLACE OF ORGANIZATION

            France
--------------------------------------------------------------------------------
NUMBER OF      (5)  SOLE VOTING POWER
                    0
SHARES         _________________________________________________________________

BENEFICIALLY   (6)  SHARED VOTING POWER
                    2,750,568 shares of Common Stock
OWNED BY       _________________________________________________________________

EACH           (7)  SOLE DISPOSITIVE POWER
                    0
REPORTING      _________________________________________________________________

PERSON WITH:   (8)  SHARED DISPOSITIVE POWER
                    2,750,568 shares of Common Stock
--------------------------------------------------------------------------------
     (9)    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
            2,750,568 shares of Common Stock
--------------------------------------------------------------------------------
     (10)   CHECK BOX IF THE AGGREGATE AMOUNT
            IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
                                                                          [ ]
--------------------------------------------------------------------------------
     (11)   PERCENT OF CLASS REPRESENTED
            BY AMOUNT IN ROW (9)
            6.28%
--------------------------------------------------------------------------------
     (12)   TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
            IN
--------------------------------------------------------------------------------


<PAGE>


CUSIP No. 125965103                   13G                  Page 7 of 12 Pages


Item 1.

(a)  Name of Issuer

       CSK Auto Corporation, a Delaware corporation (the "Company").

(b) Address of Issuer's Principal Executive Offices

       645 E. Missouri Avenue, Suite 400
       Phoenix, Arizona 85012

Item 2(a).  Name of Person Filing
Item 2(b).  Address of Principal Business Office or, if none, Residence
Item 2(c).  Citizenship

       GLG Partners LP
       1 Curzon Street
       London W1J 5HB
       England
       Citizenship: England

       GLG Partners Limited
       c/o GLG Partners LP
       1 Curzon Street
       London W1J 5HB
       England
       Citizenship: England

       Noam Gottesman
       c/o GLG Partners LP
       1 Curzon Street
       London W1J 5HB
       England
       Citizenship: United States

       Pierre Lagrange
       c/o GLG Partners LP
       1 Curzon Street
       London W1J 5HB
       England
       Citizenship: Belgium

       Emmanuel Roman
       c/o GLG Partners LP
       1 Curzon Street
       London W1J 5HB
       England
       Citizenship: France

Item 2(d)  Title of Class of Securities

       Common Stock, $0.01 par value per share ("Common Stock")

Item 2(e)  CUSIP Number

       125965103


<PAGE>


CUSIP No. 125965103                   13G                  Page 8 of 12 Pages


Item 3. If this statement is filed pursuant to ss.ss.240.13d-1(b) or
240.13d-2(b) or (c), check whether the person filing is a:

(a) [ ] Broker or dealer registered under Section 15 of the Act (15 U.S.C.78o).

(b) [ ] Bank as defined in Section 3(a)(6) of the Act (15 U.S.C. 78c).

(c) [ ] Insurance company as defined in Section 3(a)(19) of the Act
        (15 U.S.C. 78c).

(d) [ ] Investment company registered under Section 8 of the Investment
        Company Act of 1940 (15 U.S.C. 80a-8).

(e) [ ] An investment adviser in accordance with Section 240.13d-1(b)(1)(ii)(E);

(f) [ ] An employee benefit plan or endowment fund in accordance with
        Section 240.13d-1(b)(1)(ii)(F);

(g) [ ] A parent holding company or control person in accordance with
        Section 240.13d-1(b)(1)(ii)(G);

(h) [ ] A savings association as defined in Section 3(b) of the Federal
        Deposit Insurance Act (12 U.S.C. 1813);

(i) [ ] A church plan that is excluded from the definition of an investment
        company under Section 3(c)(14) of the Investment Company Act of 1940
        (15 U.S.C. 80a-3);

(j) [ ] Group, in accordance with Rule 13d-1(b)(1)(ii)(J).

Item 4.   Ownership

       Provide the following information regarding the aggregate number and
percentage of the class of securities of the issuer identified in Item 1.

       (a)  Amount beneficially owned:

            As of the date of this filing, GLG Partners LP, GLG Partners
Limited, Noam Gottesman, Pierre Lagrange and Emmanuel Roman may be deemed the
beneficial owner of (i) 1,882,461 shares of Common Stock held by GLG North
American Opportunity Fund, (ii) 24,480 shares of Common Stock held by GLG
Investments PLC through its subfund, GLG Balanced Fund, (iii) 355,233 shares of
Common Stock held by GLG Investments PLC through its subfund, GLG Capital
Appreciation Fund, (iv) 262,958 shares of Common Stock held by GLG Investments
PLC through its subfund, GLG North American Equity Fund, (v) 138,376 shares of
Common Stock held by GLG Investments IV PLC through its subfund, GLG Capital
Appreciation (Distributing) Fund, (vi) 24,260 shares of Common Stock held by
Lyxor North American Alternative Equity Fund Ltd., (vii) 42,700 shares of Common
Stock held by The Century Fund SICAV, and (viii) 20,100 shares of Common Stock
held by Pleiade SICAV through its subfund, Pleaides Actions Amerique du Nord
(each entity referred to in (i) through (viii) is herein referred to as a "Fund"
and, collectively, as the "Funds").


            GLG Partners LP, an English limited partnership, acts as the
investment manager of each of the Funds and has voting and dispositive power
over the securities held by the Funds. The general partner of GLG Partners LP is
GLG Partners Limited, an English limited company. The shareholders of GLG


<PAGE>


CUSIP No. 125965103                   13G                  Page 9 of 12 Pages


Partners Limited are Noam Gottesman, Pierre Lagrange, Philippe Jabre and Lehman
(Cayman) Limited, a subsidiary of Lehman Brothers Holdings, Inc., a
publicly-held entity. The managing directors of GLG Partners Limited are Noam
Gottesman, Pierre Lagrange and Emmanuel Roman, and as a result, each has voting
and dispositive power over the securities held by the Funds. GLG Partners LP,
GLG Partners Limited, Noam Gottesman, Pierre Lagrange and Emmanuel Roman
disclaim beneficial ownership of the securities held by the Funds except for
their pecuniary interest therein.

       (b)  Percent of class:

            The Company's prospectus filed on Form 424B3 on January 13, 2006
indicates there were 43,822,116 shares of Common Stock outstanding as of January
9, 2006. Therefore, based on the Company's outstanding shares of Common Stock,
the reporting persons may be deemed to beneficially own approximately 6.28% of
the outstanding shares of Common Stock of the Company. The foregoing should not
be construed in and of itself as an admission by any reporting person as to
beneficial ownership of shares of Common Stock owned by another reporting
person.

       (c)

            Number of shares as to which each reporting person has:

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

                    See Item 4(a)

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

                    See Item 4(a)

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

                    See Item 4(a)

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

                    See Item 4(a)

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: [ ]

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

       Not applicable.

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


<PAGE>


CUSIP No. 125965103                   13G                  Page 10 of 12 Pages


       See Exhibit I.

Item 9.  Notice of Dissolution of Group

       Not applicable.

Item 10. Certification

       By signing below each of the undersigned certifies that, to the best of
its knowledge and belief, the securities referred to above 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.

Exhibits:

Exhibit I: Joint Filing Agreement, dated as of October 6, 2006, by and among
GLG Partners LP, GLG Partners Limited, Noam Gottesman, Pierre Lagrange and
Emmanuel Roman.


<PAGE>


CUSIP No. 125965103                   13G                  Page 11 of 12 Pages


SIGNATURES

       After reasonable inquiry and to the best of its knowledge and belief,
each of the undersigned certifies that the information with respect to it set
forth in this statement is true, complete, and correct.

Dated: October 6, 2006

GLG PARTNERS LIMITED
                                        GLG PARTNERS LP
                                        By: GLG Partners Limited,
/s/ Noam Gottesman                      as its General Partner
--------------------------------
Name: Noam Gottesman
Title: Managing Director

                                         /s/ Noam Gottesman
/s/ Victoria Parry                      --------------------------------
--------------------------------        Name: Noam Gottesman
Name: Victoria Parry                    Title: Managing Director
Title: Senior Legal Counsel

                                         /s/ Victoria Parry
                                        --------------------------------
                                        Name: Victoria Parry
                                        Title: Senior Legal Counsel

PIERRE LAGRANGE                         NOAM GOTTESMAN


/s/ Pierre Lagrange                     /s/ Noam Gottesman
--------------------------------        --------------------------------


EMMANUEL ROMAN


/s/ Emmanuel Roman
--------------------------------


<PAGE>


CUSIP No. 125965103                   13G                  Page 12 of 12 Pages


                                    EXHIBIT I

                             JOINT FILING AGREEMENT

This will confirm the agreement by and among the undersigned that the Schedule
13G filed with the Securities and Exchange Commission on or about the date
hereof with respect to the beneficial ownership by the undersigned of the Common
Stock, $0.01 par value, of CSK Auto Corporation, a Delaware corporation, is
being filed, and all amendments thereto will be filed, on behalf of each of the
persons and entities named below in accordance with Rule 13d-1(k) under the
Securities Exchange Act of 1934, as amended. This Agreement may be executed in
two or more counterparts, each of which shall be deemed an original, but all of
which together shall constitute one and the same instrument.

Dated as of October 6, 2006

GLG PARTNERS LIMITED
                                        GLG PARTNERS LP
                                        By: GLG Partners Limited,
/s/ Noam Gottesman                      as its General Partner
--------------------------------
Name: Noam Gottesman
Title: Managing Director

                                         /s/ Noam Gottesman
/s/ Victoria Parry                      --------------------------------
--------------------------------        Name: Noam Gottesman
Name: Victoria Parry                    Title: Managing Director
Title: Senior Legal Counsel

                                         /s/ Victoria Parry
                                        --------------------------------
                                        Name: Victoria Parry
                                        Title: Senior Legal Counsel

PIERRE LAGRANGE                         NOAM GOTTESMAN


/s/ Pierre Lagrange                     /s/ Noam Gottesman
--------------------------------        --------------------------------


EMMANUEL ROMAN


/s/ Emmanuel Roman
--------------------------------

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