Balance Sheet Components (Tables)

12 Months Ended

Sep. 30, 2011

Balance Sheet Components

Schedule Of Changes In The Allowance For Doubtful Accounts

Classification	Balance at Beginning of Period		Additions
			Expense		Deductions/ Write- offs (a)			Balance at End of Period
Year ended September 30, 2011
Allowance for doubtful accounts	$	2,537	$	575	$	(459	)	$	2,653
Year ended September 30, 2010
Allowance for doubtful accounts	$	2,691	$	684	$	(838	)	$	2,537
Year ended September 30, 2009
Allowance for doubtful accounts	$	1,938	$	1,378	$	(625	)	$	2,691

(a) Amounts written off as uncollectible or recovered by payment.

Schedule Of Property And Equipment And Their Related Useful Lives

	September 30,
	2011			2010
Computer equipment and software (2 to 3 years)	$	57,781		$	43,655
Office equipment (2 years)		2,404			2,020
Furniture and fixtures (5 years)		2,702			17,101
Leasehold improvements (lesser of lease term or economic life)		20,876			22,980
		83,763			85,756
Less accumulated depreciation and amortization		(50,957	)		(69,798	)
Total property and equipment, net	$	32,806		$	15,958

Schedule Of Accrued Liabilities

	September 30,
	2011		2010
Accrued taxes	$	5,111	$	2,783
Deferred rent obligations—current portion		4,713		4,646
Other accrued liabilities		14,469		10,969
Accrued liabilities	$	24,293	$	18,398