Shares of

InterVideo

(IVII)

were among technology's losers Tuesday, falling 21% after the DVD software company posted second-quarter results that fell short of Wall Street expectations.

The company reported pro forma earnings of $2.1 million, or 15 cents a share, on sales of $27.6 million. Analysts polled by Thomson First Call were expecting earnings of 17 cents a share on sales of $28.3 million. A year ago the company earned $1.1 million, or 7 cents a share, on sales of $16.7 million.

Looking ahead, InterVideo forecast third-quarter pro forma earnings of 18 cents to 20 cents a share on sales of $27 million to $29 million. Analysts had been expecting earnings of 18 cents a share on higher sales of $32.2 million.

Separately, the company filed a patent infringement suit against

Dell

(DELL) - Get Report

that seeks to enjoin Dell from manufacturing, selling and offering to sell products that infringe on InterVideo's patent. The suit was filed in U.S. District Court for the Northern District of California. Shares were recently trading down $2.92 to $10.70.

Sonic Solutions

( SNIC) rose 13% after the software company posted first-quarter results that topped expectations. The company reported earnings of $4 million, or 15 cents a share, on sales of $35.5 million. Excluding items, the company would have earned $5.1 million, or 18 cents a share. Analysts were expecting earnings of 14 cents a share on sales of $33.2 million. A year ago the company earned $4 million, or 16 cents a share, on sales of $17.9 million.

Looking ahead, Sonic Solutions forecast second-quarter earnings of 9 cents to 11 cents a share on sales of $30 million to $32 million. Analysts had been expecting earnings of 16 cents a share on sales of $33.7 million. For the third quarter, the company expects earnings of 42 cents to 46 cents a share on sales of $43 million to $47 million. Analysts had been expecting earnings of 40 cents a share on sales of $44.2 million. During the fourth quarter, the company forecast earnings of 54 cents to 58 cents a share on sales of $46 million to $50 million. Finally, analysts had been expecting earnings of 51 cents a share on sales of $48.9 million. Shares were recently trading up $2.42 to $20.43.

Shares of

Gateway

( GTW) fell 20% after the company posted a second-quarter profit but cut its full-year financial guidance. The computer maker earned $17.2 million, or 5 cents a share, on sales of $873.1 million. Excluding items, the company would have earned 3 cents a share.

Sales did not include $25 million of products that were forecast to be part of the company's quarterly results because the products were still in transit as of June 30, 2005. Analysts were expecting earnings of 2 cents a share on sales of $907 million.

Looking ahead, Gateway now expects full-year earnings of 13 cents to 15 cents a share on sales of $3.9 billion to $4 billion, down from previous guidance of 17 cents to 19 cents a share on sales of $4 billion to $4.25 billion. Analysts had been expecting earnings of 16 cents a share on sales of $4.1 billion. Shares were trading down 78 cents to $3.11.

KongZhong

(KONG)

fell 7% after the company posted in-line second-quarter earnings. The provider of wireless services posted earnings of $6.6 million, or 19 cents a share, on sales of $18.4 million. Analysts were expecting earnings of 19 cents a share. A single-analyst estimate called for sales of $17 million. A year ago the company earned $5.3 million, or 19 cents a share, on sales of $12 million. Looking ahead, KongZhong expects third-quarter sales of $19 million to $19.5 million. A single analyst is expecting sales of $18.5 million. Shares were trading down 77 cents to $10.48.

Shares of

American Science & Engineering

(ASEI)

rose 5% after the maker of X-ray inspection systems received a $38.6 million order from the U.S. government. The indefinite delivery/indefinite quantity contract calls for the company to deliver 32 Z Backscatter Van X-ray screening systems. The company will also provide options, installation, operator training, and parts and warranty. Shares were trading up $2.75 to $56.48.

Other technology movers included

Intel

(INTC) - Get Report

, down 41 cents to $26.12;

Cisco Systems

(CSCO) - Get Report

, up 9 cents to $17.80;

Microsoft

(MSFT) - Get Report

, down 13 cents to $27;

Sun Microsystems

(SUNW) - Get Report

, down 7 cents to $3.69;

Oracle

(ORCL) - Get Report

, up 3 cents to $13.32;

Applied Materials

(AMAT) - Get Report

, down 34 cents to $17.30;

Nortel Networks

( NT), down 5 cents to $3.21; and

Lucent Technologies

( LU), down 4 cents to $2.88.