Updated from 1:17 p.m. EDT

Shares of

Cherokee International

( CHRK) were among the worst-performing technology stocks Friday after the company warned that third-quarter earnings and sales would not meet expectations.

The power-supply products company forecast third-quarter earnings of 6 cents to 7 cents a share on sales of $36 million. Analysts polled by Thomson First Call had been expecting earnings of 21 cents a share on sales of $37.1 million. The company said that continued weakness in demand from one of its largest customers led to the earnings and sales shortfall. Cherokee plans to release its third-quarter results on Oct. 27. Shares traded down $1.42, or 17.8%, to $6.58.

Advanced Micro Devices

(AMD) - Get Report

traded down 4.3% after the company posted in-line third-quarter earnings on lower-than-expected sales. The chipmaker earned 12 cents a share on sales of $1.24 billion.

Analysts were expecting earnings of 12 cents a share on sales of $1.3 billion. Looking ahead, the company said it expects fourth-quarter sales to increase. Analysts are expecting AMD to post a profit of 18 cents a share on sales of $1.39 billion. Shares traded down 61 cents to $13.50.

Shares of

Manhattan Associates

(MANH) - Get Report

fell 18.1% after the company warned that third-quarter earnings results would not meet expectations. Excluding items, the software maker expects earnings of 16 cents to 18 cents a share. Analysts had been expecting earnings of 24 cents a share. The company said its results were hurt by delays in closing software sales. Manhattan plans to release its full results on Oct. 20. Shares traded down $4.70 to $21.24.

Lionbridge Technologies

(LIOX)

fell 35.9% after the company warned that third-quarter earnings and sales results would fall short of expectations. The testing services company expects third-quarter earnings of 3 cents to 4 cents a share on sales of $37.5 million to $38 million. Analysts had been expecting earnings of 9 cents a share on sales of $42.4 million. The company said weaker-than-expected sales to technology customers led to the earnings and sales miss. Shares traded down $3.04 to $5.44.

Shares of

SonicWall

( SNWL) fell 17% after the company cuts its third-quarter earnings and sales guidance. The software maker now expects to post break-even results to earnings of 1 cent a share on sales of $30 million to $31 million. Previously, the company said it would post a profit of 3 cents to 4 cents a share on sales of $33.5 million to $35 million. Analysts had been expecting earnings of 3 cents a share on sales of $34.1 million. SonicWall said that entry-level product sales fell below expectations in the quarter, which led to the earnings and sales miss. Shares of SonicWall traded down $1.17 to $5.72.

Other technology volume leaders included

Sirius Satellite Radio

(SIRI) - Get Report

, down 30 cents to $3.70;

Lucent

( LU), down 9 cents to $3.39;

Intel

(INTC) - Get Report

, down 69 cents to $20.55;

Applied Materials

(AMAT) - Get Report

, down 95 cents to $16.21;

Microsoft

(MSFT) - Get Report

, down 18 cents to $27.99;

Oracle

(ORCL) - Get Report

, down 12 cents to $12.17; and

Cisco

(CSCO) - Get Report

, down 35 cents to $18.78.