Updated from 1:12 p.m. EST

Shares of Sipex ( SIPX) were among technology's losers Friday, falling 23.4% after the company announced that it could be forced to restate its financial statements because of possible improper revenue recognition.

The restatement could impact 2003 results as well as the first three quarters of 2004. Sipex said the "possible" improper recognition of revenue pertains to "sales for which price protection, stock rotation and/or return rights may have been granted." As a result, the company's audit committee and board have launched an internal investigation that's focused on the company's financial and transactional records for the years ending Dec. 31, 2003, and Jan. 1, 2005. The investigation will cause the company's financial results to be delayed for the quarter and year ending Jan. 1, 2005, and could delay the timely filing of its 10-K report with the Securities and Exchange Commission. Shares traded down 90 cents to $2.94.

Trident Microsystems ( TRID) rose 18.2% after the company posted second-quarter earnings that beat expectations. Excluding items, the provider of digital TV integrated circuits posted a profit of 3 cents a share on sales of $15.4 million. Analysts surveyed by Thomson First Call were expecting earnings of 2 cents a share on sales of $15.44 million. Looking ahead, Trident said that it expects strong growth momentum -- which had been interrupted during the second quarter because of a delay in product transition -- to return during the March quarter and throughout the balance of 2005. Shares traded up $2.79 to $18.13.

Shares of Synaptics ( SYNA) rose 21.8% after the company posted second-quarter earnings and sales that easily outpaced analysts' expectations. The maker of touchpad technology posted a profit of $9.7 million, or 33 cents a share, on sales of $56.5 million. Analysts were expecting earnings of 30 cents on sales of $54 million. Synaptics, the maker of the touchpad technology used in Apple Computer's ( AAPL) iPod, said its most recent results reflected robust demand for portable digital music players during the holiday season. Sales outside of the PC market grew by 43% during the quarter, it said. And its performance in the notebook segment was also better than expected. Shares traded up $6.58 to $36.81.

CheckFree ( CKFR) rose 6% after the company posted second-quarter earnings and sales above consensus estimates. Excluding items, the provider of electronic commerce technology earned 36 cents a share on sales of $185.8 million. Analysts were expecting earnings of 31 cents a share on sales of $182 million. CheckFree said that business during the quarter was strong across the board. Looking ahead, the company expects third-quarter earnings of 34 cents to 36 cents a share on sales of $187 million to $192 million. Analysts had been expecting earnings of 34 cents on sales of $188.6 million. Shares traded up $2.16 to $38.47.

Shares of Virage Logic ( VIRL) fell 8.7% after the company posted first-quarter sales that fell short of expectations and warned that second-quarter sales would fall short as well. The company earned 8 cents a share, which matched expectations, on sales of $15.9 million. Analysts were expecting sales of $16.1 million. Looking ahead, Virage expects second-quarter earnings of 9 cents a share -- a penny ahead of expectations -- on sales of $16.3 million to $16.6 million, lower than the $16.8 million that analysts had been expecting. Shares traded down $1.42 to $15.

Other technology movers included Sirius Satellite Radio ( SIRI), up 29 cents to $5.83; Intel ( INTC), down 16 cents to $22.42; Microsoft ( MSFT), down 21 cents to $25.65; Lucent ( LU), down 1 cent to $3.27; Applied Materials ( AMAT), down 32 cents to $15.59; Cisco ( CSCO), down 31 cents to $18.01; Sun Microsystems ( SUNW), down 7 cents to $4.17; and eBay ( EBAY), up $2.72 to $86.05.