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.

Shares of

Tumbleweed Communications

(TMWD)

fell after the company reported a second-quarter earnings and sales shortfall and warned that third-quarter financial results would fall well short of expectations. The secure Internet messaging company posted a second-quarter loss of 3 cents a share on sales of $10 million. Analysts had expected it to report a loss of 2 cents a share on sales of $11.3 million. Looking ahead, it expects to post a third-quarter loss of 2 cents to 4 cents a share on sales of $10 million to $11 million. Analysts were looking for it to post a profit of 1 cent a share on sales of $12.7 million. Shares of Tumbleweed Communications traded down $1.18, or 40.7%, to $1.72.

Other technology volume leaders included

Microsoft

(MSFT) - Get Report

, down 97 cents to $28.03;

Intel

(INTC) - Get Report

, down 60 cents to $22.67;

Cisco

(CSCO) - Get Report

, down 46 cents to $20.93;

Oracle

(ORCL) - Get Report

, down 26 cents to $10.10;

Amazon.com

(AMZN) - Get Report

, down $5.84 to $39.98;

Conexant

(CNXT) - Get Report

, down 19 cents to $1.98;

Sun Microsystems

(SUNW) - Get Report

, down 11 cents to $3.69; and

Lucent

(LU)

, down 4 cents to $3.25.