Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Jul. 31, 2011	Jul. 31, 2010	Jul. 31, 2011	Jul. 31, 2010
Revenue:
Products	$ 350,030	$ 312,378	$ 1,038,483	$ 667,852
Services	85,283	77,297	248,032	151,170
Total revenue	435,313	389,675	1,286,515	819,022
Cost of goods sold:
Products	198,217	201,559	615,283	396,449
Services	52,199	44,107	151,996	93,462
Total cost of goods sold	250,416	245,666	767,279	489,911
Gross profit	184,897	144,009	519,236	329,111
Operating expenses:
Research and development	93,216	100,869	288,630	222,044
Selling and marketing	61,895	52,127	180,755	131,692
General and administrative	28,172	32,649	98,966	66,915
Acquisition and integration costs	4,822	17,033	39,748	83,285
Amortization of intangible assets	13,673	38,727	56,131	61,829
Restructuring costs	504	2,157	5,190	3,985
Change in fair value of contingent consideration			(3,289)
Total operating expenses	202,282	243,562	666,131	569,750
Loss from operations	(17,385)	(99,553)	(146,895)	(240,639)
Interest and other income (loss), net	(3,160)	(2,668)	7,334	307
Interest expense	(9,470)	(5,990)	(28,426)	(11,931)
Loss before income taxes	(30,015)	(108,211)	(167,987)	(252,263)
Provision for income taxes	1,435	1,644	5,205	934
Net loss	$ (31,450)	$ (109,855)	$ (173,192)	$ (253,197)
Basic net loss per common share	$ (0.33)	$ (1.18)	$ (1.82)	$ (2.73)
Diluted net loss per potential common share	$ (0.33)	$ (1.18)	$ (1.82)	$ (2.73)
Weighted average basic common shares outstanding	96,313	92,906	95,389	92,851
Weighted average dilutive potential common shares outstanding	96,313	92,906	95,389	92,851