Updated from 12:25 p.m. EDT

Shares of @Road ( ARDI) were among the worst-performing technology stocks Friday after the company posted weaker-than-expected second-quarter earnings and sales.

The mobility solutions company posted earnings of 5 cents a share on sales of $18.3 million. Analysts polled by Thomson First Call had expected it to earn 6 cents a share on sales of $18.9 million. Shares of Fremont, Calif.-based @Road traded down $2.71, or 46.6%, to $3.10.

Foundry Networks ( FDRY) slumped after it reported weaker-than-expected second-quarter earnings and sales and warned that third-quarter earnings would fall short of expectations. The data networking company earned 11 cents a share on sales of $97.8 million. Analysts had expected it to earn 14 cents a share on sales of $107.5 million. Looking ahead, it expects to post a third-quarter profit of 9 cents to 13 cents a share on sales of $100 million to $110 million. Analysts are looking for it to earn 15 cents a share on sales of $110.2 million. Shares of Foundry Networks traded down $1.30, or 11.2%, to $10.32.

Shares of Packeteer ( PKTR) plunged after the company posted weaker-than-expected second-quarter earnings and sales. The computer networking company earned 6 cents a share on sales of $21.6 million. Analysts had expected it to earn 10 cents a share on sales of $22.5 million. Weakness in the company's Asia Pacific business led to the weak results. A year ago it earned 10 cents a share on sales of $21.5 million. Shares of Packeteer traded down $5.70, or 41.6%, to $7.99.

DoubleClick ( DCLK) was hammered after it posted weaker-than-expected second-quarter financial results and warned that third-quarter results would fall short of expectations. The Internet marketing company earned 3 cents a share on sales of $69.2 million. Analysts had expected it to earn 4 cents a share on sales of $71.8 million. Looking ahead, DoubleClick expects to earn 2 cents to 5 cents a share on sales of $76 million to $82 million. Analysts had expected it to earn 8 cents a share on sales of $84.6 million. Shares of DoubleClick traded down $1.92, or 27.5%, to $5.06.

If you liked this article you might like

Thursday's Tech Winners & Losers

Thursday's Tech Winners & Losers

Thursday's Winners & Losers: FTD

Thursday's Winners & Losers: FTD

Wednesday's Winners & Losers: Superior Offshore

Wednesday's Winners & Losers: Superior Offshore

Wednesday's Tech Winners & Losers

Wednesday's Tech Winners & Losers

Tuesday's Winners & Losers: Fossil

Tuesday's Winners & Losers: Fossil