Systemax

(SYX) - Get Report

climbed after the Port Washington, N.Y.-based direct marketer of computers and other items posted an increase in first-quarter earnings. The company reported income of $17.6 million, or 48 cents a share, compared with $2.6 million, or 7 cents a share, a year ago. Excluding a gain, net income would have totaled 36 cents a share. Sales increased 6.9% to $574.9 million. Shares gained $1.81, or 21.7%, to $10.16 recently.

InterVoice

(INTV)

jumped 16% after Wedbush Morgan upgraded the stock to strong buy from buy. Shares of Intervoie were recently up 97 cents to $6.93.

Travelzoo

(TZOO) - Get Report

fell after the New York-based Internet media company was downgraded by Stifel Nicolaus to sell from hold. Shares dropped $3.70, or 10.5%, to $31.60.

Lone Star Steakhouse & Saloon

(STAR) - Get Report

lost ground after shareholder Barington Capital Group said a bid to take over the Wichita, Kan., restaurant operator "fails to provide adequate value" to stockholders. Lone Star has agreed to be acquired by affiliates of Lone Star Funds for $27.10 a share. Lone Star was down 44 cents, or 1.6%, to $27.49.

Other movers included

pSivida

(PSDV)

, up 21.6% to $2.74,

Radiant Systems

( RADS), ahead by 14% to $11.72, and

Harris & Harris

(TINY)

, a 12.7% gainer to $11.19.

NationsHealth

( NHRX) fell 17% to $1.82,

Genetic Technologies

(GENE) - Get Report

dropped 12% to $7.35, and

Dover Downs

(DDE)

, was off 7% to $12.79.