Consolidated Balance Sheets (USD $) In Thousands	12 Months Ended
	Apr. 03, 2011	Mar. 28, 2010
Current assets:
Cash and cash equivalents	$ 147,780	$ 190,308
Short-term investment securities	236,296	185,365
Accounts receivable, less allowance for doubtful accounts of $1,536 and $1,505 as of April 3, 2011 and March 28, 2010, respectively	70,134	73,301
Inventories	26,931	19,403
Deferred tax assets	17,754	10,976
Other current assets	20,753	9,845
Total current assets	519,648	489,198
Property and equipment, net	77,134	83,496
Goodwill	119,748	119,748
Purchased intangible assets, net	12,694	17,394
Deferred tax assets	25,333	36,917
Other assets	2,650	3,984
Total Assets	757,207	750,737
Current liabilities:
Accounts payable	34,816	36,766
Accrued compensation	25,858	22,727
Accrued taxes	6,012	2,633
Deferred revenue	10,431	9,240
Other current liabilities	5,221	11,069
Total current liabilities	82,338	82,435
Accrued taxes	62,565	70,577
Deferred revenue	5,169	7,401
Other liabilities	5,971	6,985
Total liabilities	156,043	167,398
Commitments and contingencies
Stockholders' equity:
Preferred stock, $0.001 par value; 1,000,000 shares authorized; no shares issued and outstanding	0	0
Common stock, $0.001 par value; 500,000,000 shares authorized; 208,042,000 and 204,893,000 shares issued as of April 3, 2011 and March 28, 2010, respectively	208	205
Additional paid-in capital	844,546	778,853
Retained earnings	1,387,765	1,248,675
Accumulated other comprehensive income	614	1,206
Treasury stock, at cost: 103,325,000 and 92,586,000 shares as of April 3, 2011 and March 28, 2010,respectively	(1,631,969)	(1,445,600)
Total stockholders' equity	601,164	583,339
Total liabilities and stockholders' equity	$ 757,207	$ 750,737