Goodwill and Acquired Intangible Assets, Net (in thousands): (Tables)

6 Months Ended

Jul. 30, 2011

Schedule of Goodwill

The following table summarizes the activity related to the carrying value of goodwill:

Balance at January 29, 2011	$	2,004,833
Additions due to business combinations		2,070
Balance at July 30, 2011	$	2,006,903

Schedule of Finite-Lived Intangible Assets by Major Class

Acquired Intangible Assets, Net

			July 30, 2011							January 29, 2011
	Range of Useful Lives		Gross Carrying Amounts		Accumulated Amortization and Write-Offs			Net Carrying Amount		Gross Carrying Amounts		Accumulated Amortization and Write-Offs			Net Carrying Amount
Purchased technology		1 -7 years	$	739,605	$	(705,261	)	$	34,344	$	726,040	$	(698,877	)	$	27,163
Core technology		1 -8 years		212,650		(166,862	)		45,788		212,650		(155,359	)		57,291
Trade name		1 -5 years		350		(318	)		32		350		(299	)		51
Customer contracts		4 -7 years		187,200		(164,318	)		22,882		187,200		(156,774	)		30,426
In-process research and development		*		9,700		—			9,700		9,700		—			9,700
Total intangible assets, net			$	1,149,505	$	(1,036,759	)	$	112,746	$	1,135,940	$	(1,011,309	)	$	124,631

* Upon completion of the project, the related in-process research and development (“IPR&D”) assets will be amortized over its estimated useful life. If any of the projects are abandoned or the forecast of the project indicates that the fair value is less than the carrying amount, the Company will be required to impair the related IPR&D asset.

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

Based on the identified intangible assets recorded at July 30, 2011, the future amortization expense excluding IPR&D for the next five fiscal years is as follows (in thousands):

Fiscal year
Remainder of fiscal 2012	$	22,295
2013		41,436
2014		26,753
2015		5,351
2016		2,587
Thereafter		4,624
	$	103,046