Shares of

Entrust

( ENTU) were among technology's losers Thursday, plunging 17% after the software company warned that first-quarter results will fall well below expectations.

The company sees a loss of 13 cents to 16 cents a share, or about 4 cents a share before items. Analysts polled by Thomson First Call project earnings of 2 cents a share. Entrust put its revenue at $21.1 million, below Wall Street's projection of $25 million. "We believe that our first-quarter results were impacted by two main factors: first, our inability to close large product and services deals in the quarter; second, a shift in our product mix toward our emerging growth products, which tend to be smaller up front deals and carry less professional services requirements," the company said.

For all of 2006, Entrust expects earnings ranging from break even to 8 cents a share. The company predicts revenue of $92 million to $102 million. Analysts project earnings of 16 cents a share and revenue of $106.1 million. Shares were down 74 cents to $3.71.

Napster

( NAPS) jumped 11% after the online music company boosted its fourth-quarter sales guidance. The company now sees sales for the March quarter topping $26 million, up from an earlier view of $25 million. Napster also said it expects a much smaller loss than originally forecast. Analysts project a loss of 36 cents a share and sales of $25 million. "Napster's premium subscriber growth was extremely strong during our most recent quarter, resulting in revenue that exceeded our expectations. We significantly reduced our operating expenses, continuing to deliver on our commitment to substantially decrease our cash burn," the company said. Shares were up 37 cents to $3.74.

Shares of

Websense

(WBSN)

tumbled 10% after the software company previewed first-quarter sales that fell slightly below expectations. The company estimates earnings, excluding stock-based compensation costs, of 23 cents to 24 cents a share. The company predicts sales of $42.3 million to $42.5 million. Analysts project earnings of 23 cents a share on sales of $43.1 million. "International billings and average selling price both increased, but we experienced sales execution issues, primarily in North America, which resulted in lower than expected overall billings performance," the company said. Websense plans to issue its final results on April 25. Shares were trading down $2.81 to $25.25.

M-Systems

( FLSH) traded actively after the flash memory company terminated its licensing agreement with

Samsung Electronics

. M-Systems said it ended the agreement, which was signed in December 2003, because of Samsung's "failure to abide by its supply commitments under the terms of the agreement." Terms of the pact called for M-Systems to grant a license to its patents in exchange for license fees and secured capacity of NAND flash memory at favorable terms. "The company firmly believes in its ability to secure the flash supply needed to facilitate its continued growth," M-Systems said. The company's shares were up 16 cents to $29.21.

Shares of

UTStarcom

(UTSI) - Get Report

rose 8% after the company issued a bullish first-quarter forecast. "We are enthusiastic about the customer traction we are seeing for our product portfolio so far this year," the company said. "In fact, we are particularly pleased with shipments in the first quarter of 2006 and believe that Q1 shipments for the Personal Communications division will exceed those of the first quarter of 2005." The company, which is attending the CTIA Wireless 2006 conference in Las Vegas, added that it has also "shipped more UTStarcom manufactured handsets already in 2006 than we did in all of 2005." Shares were trading up 57 cents to $7.27.

Other technology movers included

Lucent Technologies

( LU), up 1 cent to $3.18;

Sirius Satellite Radio

(SIRI) - Get Report

, up 29 cents to $5.33;

Apple Computer

(AAPL) - Get Report

, up $3.14 to $70.35;

JDSU

(JDSU)

, up 5 cents to $3.99;

Cisco Systems

(CSCO) - Get Report

, down 32 cents to $21.37;

Intel

(INTC) - Get Report

, down 2 cents to $19.46;

Sun Microsystems

(SUNW) - Get Report

, up 8 cents to $5.20;

Ciena

(CIEN) - Get Report

, up 5 cents to $4.90;

Microsoft

(MSFT) - Get Report

, down 22 cents to $27.52; and

Oracle

(ORCL) - Get Report

, down 8 cents to $13.87.