Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Apr. 30, 2011	Apr. 30, 2010	Apr. 30, 2011	Apr. 30, 2010
Revenue:
Products	$ 336,026	$ 206,420	$ 688,453	$ 355,474
Services	81,868	47,051	162,749	73,873
Total revenue	417,894	253,471	851,202	429,347
Cost of goods sold:
Products	202,665	118,221	417,066	194,890
Services	49,396	30,308	99,797	49,355
Total cost of goods sold	252,061	148,529	516,863	244,245
Gross profit	165,833	104,942	334,339	185,102
Operating expenses:
Research and development	99,624	71,142	195,414	121,175
Selling and marketing	61,768	45,328	118,860	79,565
General and administrative	32,480	21,503	70,794	34,266
Acquisition and integration costs	10,741	39,221	34,926	66,252
Amortization of intangible assets	13,674	17,121	42,458	23,102
Restructuring costs	3,164	1,849	4,686	1,828
Change in fair value of contingent consideration			(3,289)
Total operating expenses	221,451	196,164	463,849	326,188
Loss from operations	(55,618)	(91,222)	(129,510)	(141,086)
Interest and other income (loss), net	4,229	3,748	10,494	2,975
Interest expense	(9,406)	(4,113)	(18,956)	(5,941)
Loss before income taxes	(60,795)	(91,587)	(137,972)	(144,052)
Provision (benefit) for income taxes	1,891	(1,578)	3,770	(710)
Net loss	$ (62,686)	$ (90,009)	$ (141,742)	$ (143,342)
Basic net loss per common share	$ (0.66)	$ (0.97)	$ (1.49)	$ (1.55)
Diluted net loss per potential common share	$ (0.66)	$ (0.97)	$ (1.49)	$ (1.55)
Weighted average basic common shares outstanding	95,360	92,614	94,928	92,590
Weighted average dilutive potential common shares outstanding	95,360	92,614	94,928	92,590