Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Apr. 30, 2012	Apr. 30, 2011
Cash flows from operating activities
Net loss	$ (75,433)	$ (141,742)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Amortization of premium (discount) on marketable securities	(26)	(12)
Change in fair value of embedded redemption feature	4,730	(9,160)
Depreciation of equipment, furniture and fixtures, and amortization of leasehold improvements	29,079	29,367
Share-based compensation costs	16,830	18,886
Amortization of intangible assets	37,865	56,637
Deferred tax provision (benefit)	(46)	120
Provision for inventory excess and obsolescence	13,982	6,413
Provision for warranty	16,615	5,646
Other	3,335	3,354
Changes in assets and liabilities, net of effect of acquisition:
Accounts receivable	19,107	(48,351)
Inventories	(26,630)	(30,490)
Prepaid expenses and other	19,597	963
Accounts payable, accruals and other obligations	8,315	(26,078)
Deferred revenue	6,036	18,999
Net cash provided by (used in) operating activities	73,356	(115,448)
Cash flows used in investing activities:
Payments for equipment, furniture, fixtures and intellectual property	(16,150)	(29,420)
Restricted cash	(17,202)	(11,853)
Purchase of available for sale securities	0	(49,894)
Proceeds from sale of cost method investment	524	0
Receipt of contingent consideration related to business acquisition	0	16,394
Net cash used in investing activities	(32,828)	(74,773)
Repayment of capital lease obligations	(699)	0
Cash flows from financing activities:
Proceeds from issuance of common stock	5,715	7,525
Net cash provided by financing activities	5,016	7,525
Effect of exchange rate changes on cash and cash equivalents	(1,893)	849
Net increase (decrease) in cash and cash equivalents	45,544	(182,696)
Cash and cash equivalents at beginning of period	541,896	688,687
Cash and cash equivalents at end of period	585,547	506,840
Supplemental disclosure of cash flow information
Cash paid during the period for interest	16,520	16,411
Cash paid during the period for income taxes, net	5,811	(231)
Non-cash investing and financing activities
Purchase of equipment in accounts payable	4,004	3,242
Fixed assets acquired under capital leases	$ 4,427	$ 1,401