Updated from 1:17 p.m. EDT

Shares of SupportSoft ( SPRT) were among the best-performing technology stocks Wednesday after the company reported better-than-expected second-quarter earnings and sales.

The software company earned 11 cents a share on sales of $16.9 million. Analysts polled by Thomson First Call had expected it to earn 8 cents a share on sales of $16.3 million. Second-quarter results reflected strong performance in SupportSoft's enterprise and digital service provider segments. Looking ahead, the company expects a third-quarter profit of 8 cents to 9 cents a share on sales of $16.7 million to $17.5 million Analysts are looking for it to earn 8 cents a share on sales of $17.1 million. Shares of SupportSoft traded up $1.21, or 16.5%, to $8.55.

Mercury Interactive ( MERQ) fell after it reported lower-than-expected second-quarter earnings and sales and warned that third-quarter results could fall below expectations . Excluding items, the company posted second-quarter earnings of 22 cents a share on sales of $159 million. Analysts had expected it to earn 25 cents a share on sales of $165 million. Looking ahead, it said that third-quarter earnings would come in at 22 cents to 27 cents a share on sales of $160 million to $170 million. Analysts had expected it to earn 27 cents a share on sales of $170 million. Shares of Mercury Interactive traded down $4.80, or 11.2%, to $37.93.

Shares of Sanmina-SCI ( SANM) rose after the company reported better-than-expected third-quarter earnings and sales and reaffirmed its fourth-quarter outlook . Excluding items, the company earned 7 cents a share on sales of $3.07 billion in the third quarter. Analysts had expected it to earn 6 cents a share on sales of $3.01 billion. Looking ahead, it expects to earn 8 cents to 10 cents a share on sales of $3.1 billion to $3.3 billion, which is in line with analysts' earnings and sales projections. Shares of Sanmina-SCI traded up 35 cents, or 5.1%, to $7.22.

Sirenza Microdevices ( SMDI) rose after it reported better-than-expected second-quarter financial results. Excluding items, it earned 4 cents a share on sales of $15.7 million, exceeding the company's previously increased second-quarter guidance for earnings and sales. Shares of Sirenza Microdevices traded up 57 cents, or 14.3%, to $4.56.

Shares of WebEx Communications ( WEBX) rose after the company reported better-than-expected second-quarter financial results and upped its full-year earnings and sales guidance. During the second quarter, the company earned 22 cents a share on sales of $61.1 million. Analysts had expected it to earn 21 cents a share on sales of $60 million. Looking ahead, it now expects full-year earnings of 86 cents to 92 cents a share, up from its previous guidance of 80 cents to 90 cents a share. Sales, meanwhile, are now expected to be $240 million to $250 million, up from its previous guidance of $235 million to $245 million. Analysts are looking for it to earn 87 cents a share on sales of $245.5 million. Shares of WebEx traded up $1.26, or 6.9%, to $19.66.

Other technology volume leaders included Microsoft ( MSFT), up 54 cents to $28.86; Sun Microsystems ( SUNW), down 32 cents to $3.79; Intel ( INTC), down 68 cents to $22.56; Oracle ( ORCL), down 15 cents to $10.35; Lucent ( LU), down 3 cents to $3.37; and Sirius Satellite Radio ( SIRI), down 15 cents to $2.46.