SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Expires: February 28, 2011 Estimated average burden hours per response 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* SPO ADVISORY CORP (Last) (First) (Middle) 591 REDWOOD HIGHWAY, SUITE 3215 (Street) MILL VALLEY CA 94941 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol ADVENT SOFTWARE INC /DE/ [ ADVS ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 08/31/2007
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/04/2007		P		3,620	A	$40.57	7,604,890	I ( 1 ) ( 2 ) ( 3 ) ( 4 )	See footnotes
Common Stock	09/04/2007		P		1,280	A	$40.58	7,606,170	I	See footnotes
Common Stock	09/04/2007		P		1,500	A	$40.6	7,607,670	I	See footnotes
Common Stock	09/04/2007		P		100	A	$40.7	7,607,770	I	See footnotes
Common Stock	09/04/2007		P		2,700	A	$40.75	7,610,470	I	See footnotes

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

1. Name and Address of Reporting Person* SPO ADVISORY CORP (Last) (First) (Middle) 591 REDWOOD HIGHWAY, SUITE 3215 (Street) MILL VALLEY CA 94941 (City) (State) (Zip)

1. Name and Address of Reporting Person* SPO ADVISORY PARTNERS LP (Last) (First) (Middle) 591 REDWOOD HIGHWAY, SUITE 3215 (Street) MILL VALLEY CA 94941 (City) (State) (Zip)

1. Name and Address of Reporting Person* SPO PARTNERS II LP (Last) (First) (Middle) 591 REDWOOD HIGHWAY, SUITE 3215 (Street) MILL VALLEY CA 94941 (City) (State) (Zip)

1. Name and Address of Reporting Person* SCULLY JOHN H (Last) (First) (Middle) 591 REDWOOD HIGHWAY, SUITE 3215 (Street) MILL VALLEY CA 94941 (City) (State) (Zip)

1. Name and Address of Reporting Person* OBERNDORF WILLIAM E (Last) (First) (Middle) 591 REDWOOD HIGHWAY, SUITE 3215 (Street) MILL VALLEY CA 94941 (City) (State) (Zip)

1. Name and Address of Reporting Person* PATTERSON WILLIAM J (Last) (First) (Middle) 591 REDWOOD HIGHWAY, SUITE 3215 (Street) MILL VALLEY CA 94941 (City) (State) (Zip)

1. Name and Address of Reporting Person* PHOEBE SNOW FOUNDATION (Last) (First) (Middle) 591 REDWOOD HIGHWAY , SUITE 3215 (Street) MILL VALLEY CA 94941 (City) (State) (Zip)

Explanation of Responses:

1. The entities acquiring these shares are SPO Partners II, L.P. ("SPO Partners"), which bought 70,200 shares and Phoebe Snow Foundation ("PSF"), which bought 1,700 shares.

2. As a result of the purchases causing this filing, 6,934,600 shares of the issurer's common stock are owned directly by SPO Partners, and may be deemed to be indirectly beneficially owned by (i) SPO Advisory Partners, L.P. ("SPO Advisory"), the sole general partner of SPO Partners, (ii) SPO Advisory Corp. ("SPO Corp."), the sole general partner of SPO Advisory, and (iii) John H. Scully ("JHS"), William E. Oberndorf ("WEO") and William J. Patterson ("WJP"), the three controlling persons of SPO Corp. Additionally, 644,700 shares are owned directly by San Francisco Partners II, L.P. ("SF Partners"), and may be deemed to be indirectly beneficially owned by (i)SF Advisory Partners, L.P. ("SF Advisory"), the sole general partner of SF Partners, (ii) SPO Corp. the sole general partner of SF Advisory and (iii) JHS, WEO & WJP, the three controlling persons of SPO Corp.

3. Additionally, as a result of the purchases causing this filing, 26,300 shares of the issuer's common stock are owned directly by PSF. Additionally, JHS owns 200 shares in his IRAs, which are self-directed. Additionally, 4,200 shares are owned by The Elizabeth R. & William J. Patterson Foundation, ("WJPFND"). Additionally, WJP owns 300 shares in his IRA, which is self-directed. Additionally, 170 shares of the issuer's common stock are owned directly by Eli J. Weinberg.

4. Additionally, JHS owns 60,000 options of the issuer's common stock. These options were granted to JHS as a director of the company under the 2002 Stock Plan. Pursuant to the partnership agreement governing SPO Partners, total options owned by JHS may be deemed to be indirecly beneficially owned by SPO Partners, along with any profits arising from the exercise of the options or the benefits of these options once they are vested. JHS, WEO & WJP are the three controlling persons of SPO Corp, the sole general partner of SPO Advisory, which is the sole general partner of SPO Partners. Each of the reporting owners disclaims beneficial ownership of the report ed securities except to the extent of such person's pecuniary interest, if any, therein.

Remarks:

Form 2 of 2. The individuals listed in Notes (1),(2),(3) and (4) above (each a "Reporting Person") may be deemed to form a "group", as such term is defined in Rule 13d-5(b)(1) promulgated under the Securities Exchange Act of 1934, for purposes of this filing. JHS is the Chairman of the Board of Directors of the issuer. This filing shall not be deemed as an admission by any Reporting Person that such person is, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the beneficial owner of any equity securities covered by this statement. Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of such person's pecuniary interest, if any, therein.

	Kim M. Silva, Attorney in fact	09/05/2007
	** Signature of Reporting Person	Date
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