Updated from 2:03 p.m. Shares of UTStarcom ( UTSI) were among technology's losers Friday, falling 19.9% after the company warned that fourth-quarter earnings and sales would fall well short of expectations. The maker of wireless gear expects to lose 40 cents to 45 cents during the quarter on sales of $740 million to $745 million. Previously, UTStarcom forecast sales of $875 million to $885 million. Analysts polled by Thomson First Call had been expecting sales of $874 million. UTStarcom blamed the shortfall on a slowing of the Chinese economy and the maturation of the personal access systems market. The company warned that first-quarter sales would be between $770 million and $780 million, lower than the $810.7 million that analysts had been expecting. Earnings are expected to be between 20 cents and 22 cents a share. Shares traded down $3.97 to $15.97. Vastera ( VAST) jumped 50% after the company agreed to be acquired by J.P. Morgan Chase ( JPM) for $129 million in cash. Vastera shareholders will receive $3 a share in cash for each share they own, representing a 50% premium to Thursday's closing price of $2. Vastera, which provides trade management solutions, will be combined with the trade services businesses of JPMorgan's treasury services unit. Shares traded up $1 to $3. Shares of Taser International ( TASR) fell 17.7% after the company said it's being informally probed by the Securities and Exchange Commission. The stun-gun maker said the SEC is seeking information pertaining to the safety of its products and a recent order received from Davidson's, a Taser distributor. "We are confident our statements are supported by the safety studies of our products," the company said. As for Davidson's, which has been a Taser distributor since 1999, its "most recent order was received and shipped in the normal course of business in the fourth quarter of 2004," Taser said. Shares traded down $4.90 to $22.72. FormFactor ( FORM) fell 3.2% after the company lowered its fourth-quarter outlook for earnings and sales. The semiconductor equipment maker now expects earnings of 12 cents to 13 cents a share, down from previous guidance of 18 cents to 19 cents a share. Preliminary sales totaled $46.1 million, down from previous guidance of $50 million to $53 million. Analysts were expecting earnings of 19 cents a share on sales of $52.4 million. The sales shortfall was blamed on contamination problems in the company's wafer production line during the end of the fourth quarter, resulting in lower yields and delayed shipments. "We have identified root causes of the wafer yield loss and are implementing corrective action steps," the company said. Shares traded down 73 cents to $22.26. Shares of DoubleClick ( DCLK) rose 8.1% after the company raised its fourth-quarter earnings and sales projections. Excluding items, the marketing tools company now expects earnings of 6 cents to 7 cents a share, up from previous guidance of 1 cent to 4 cents a share. Sales are now expected to range from $81 million to $82 million, up from previous guidance of $72 million to $77 million. Analysts had been expecting earnings of 3 cents a share on sales of $75.7 million. Strength in the company's TechSolutions segment led to the revised outlook. DoubleClick will report full fourth-quarter earnings results on Feb. 3. Shares traded up 60 cents to $8. Other technology movers included Sirius Satellite Radio ( SIRI), down 39 cents to $7.10; Intel ( INTC), up 34 cents to $22.80; Lucent ( LU), down 7 cents to $3.50; Microsoft ( MSFT), down 8 cents to $26.67; Cisco ( CSCO), down 13 cents to $18.72; Sun Microsystems ( SUNW), up 2 cents to $4.62; Oracle ( ORCL), up 11 cents to $13.33; and Symantec ( SYMC), up 61 cents to $23.79.