Condensed Consolidated Statements of Cash Flows (USD $) In Thousands	6 Months Ended
Jul. 03, 2011	Jun. 27, 2010
Cash flows from operating activities:
Net loss	$ (11,487)	$ (19,136)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Allowance for doubtful accounts	294	(711)
Depreciation and amortization	3,227	3,655
Inventory valuation charges	2,442	492
Stock-based compensation	1,403	1,267
Other non-cash items	0	72
Changes in assets and liabilities:
Accounts receivable	6,756	(4,864)
Advance billings	(886)	(1,963)
Inventories	1,352	(400)
Prepaid expenses and other current assets	824	982
Other assets	212	746
Accounts payable	(5,004)	3,262
Accrued liabilities	4,865	(183)
Deferred revenue	1,223	2,156
Income taxes payable, non-current and other liabilities	(170)	(495)
Net cash provided by (used in) operating activities	5,051	(15,120)
Cash flows from investing activities:
Purchases of available-for-sale investments	0	(9,329)
Maturities of available-for-sale investments	2,151	13,125
(Increase) decrease in restricted cash	1,196	(17)
Purchases of property and equipment	(496)	(428)
Net cash from investing activities	2,851	3,351
Cash flows from financing activities:
Proceeds from issuance of common stock, net	13,128	171
Cash flows from financing activities	13,128	171
Effect of exchange rate changes on cash and cash equivalents	2,152	(2,443)
Net increase (decrease) in cash and cash equivalents	23,182	(14,041)
Cash and cash equivalents, beginning of period	16,863	45,346
Cash and cash equivalents, end of period	$ 40,045	$ 31,305

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