Shares of

Baidu.com

(BIDU) - Get Report

surged in late trading Tuesday after theBeijing-based Internet search provider beat Wall Street's first-quarterearnings expectation. The company posted earnings of $4.4 million, or 13cents an American depositary share. Excluding stock-option costs, Baiduearned $5.4 million, or 16 cents an ADS. Analysts polled by Thomson FirstCall expected earnings of 12 cents an ADS. The company posted sales of $16.9million, topping analysts' forecast of $15.1 million.

Baidu said it anticipates second-quarter sales of $23 million to $24million, ahead of Wall Street expectations of $17.6 million. Shares jumped$13.87, or 23%, to $75.42 after hours.

Nuance Communications

(NUAN) - Get Report

sank after the company postedweaker-than-expected revenue for the second quarter. The company's losswidened slightly to $1.4 million, or 1 cent a share, from $1 million, or 1cent a share, a year earlier. Excluding various items, Nuance postedearnings of $10.3 million, or 6 cents a share, up from $3.5 million, or 3cents a share, a year earlier. Revenue for the quarter rose to $71.7 millionfrom $53.1 million. The earnings, before items, matched analysts' meanestimate, but revenue was shy of Wall Street's target of $75 million. Sharesfell $1.15, or 8.7%, to $12.11 after hours.

Shares of

Transmeta

( TMTA) plummeted after the microprocessor andsemiconductor developer lowered its revenue guidance and announced theresignation of its chief financial officer. For the first quarter, thecompany posted a loss of $1.6 million, or 1 cent a share, compared with aloss of $21.1 million, or 11 cents a share, from a year ago. Revenue rose to$19.5 million from $6.9 million a year ago.

For the full year, Transmeta forecast a loss of 8 cents to 13 cents ashare, including $7 million related to patent amortization and $6 million instock options charges. "Earlier this quarter, we entered into new projectagreements with Sony for their new fiscal year, but at a lower revenue levelthan anticipated. As a result, our services revenue may be lower than wepreviously expected and we have reduced our full-year revenue guidance tobetween $48 million to $58 million," Chief Financial Officer Mark Kent saidin a statement. Separately, Transmeta said Kent will resign after the filingof the company's first-quarter 10-Q. The company has begun a search for anew CFO. Shares dropped 54 cents, or 23%, to $1.76 after-hours Tuesday.

Shares of

Multi-Fineline Electronix

(MFLX)

slipped after the electroniccircuit maker posted fiscal second-quarter earnings that missed WallStreet's forecast. The company posted income of $12.5 million, or 49 cents ashare, up from $7.9 million, or 32 cents a share, a year ago. Sales for theMarch quarter jumped 60% to $123.8 million. Analysts were looking forearnings of 52 cents a share and revenue of $130.2 million.

For the fiscal third quarter, the company projects sales of $126 million to $136 million. Wall Street forecasts called for revenue of $137.4million. Multi-Fineline shares sank $8.47, or 14%, to $51 in after-hourstrading.

Mylan Labs

(MYL) - Get Report

shares advanced 5% after the drugmaker's fiscal fourth-quarter earnings surpassed analysts' estimates. The company earned$57.7 million, or 27 cents a share, on revenue of $324.5 million for thequarter ended March 31. Analysts had forecast a profit of 24 cents a shareand revenue of $314.2 million. A year earlier, Mylan earned $38.1 million,or 14 cents a share, on revenue of $316.4 million.

Looking ahead, Mylan said it still expects earnings of $1.20 to $1.40 ashare for the coming year, before stock-option costs. Analysts projectearnings of $1.21 a share. Mylan shares rose $1.18 to $23.35 after hours.

Weight Watchers

(WTW) - Get Report

shares rose slightly after the company postedmixed first-quarter results. Earnings rose to $57 million, or 56 cents ashare, from $51.6 million, or 49 cents a share, a year earlier. Revenue grewto $342 million from $330 million. Analysts, on average, expected earningsof 55 cents a share and revenue of $361.6 million.

Weight Watchers backed its 2006 guidance for earnings of $2.18 to $2.28a share, or $2.10 to $2.20 before stock-option costs. Analysts projectearnings of $2.17 a share, including the stock-option costs, according toFirst Call. Shares rose 18 cents to $47 after hours.

Asyst Technologies

( ASYT) shares fell after the company postedlower-than-expected fiscal fourth-quarter results. Asyst, a maker ofautomation systems for chip and flat-panel display makers, posted a profitof $2 million, or 4 cents a share, reversing a year-earlier loss of $1.8million, or 4 cents a share. Excluding items, earnings for the March quarterwere $4.8 million, or 10 cents a share, a penny below analysts' meanestimate. Sales declined to $110.7 million from $143.6 million, missing WallStreet's target of $116 million.

For the current quarter, Asyst forecast earnings of 8 cents to 10 centsa share, before items. The company sees sales of $110 million to $120million. Analysts projected earnings of 14 cents a share and sales of $125million. Shares were down $1.13, or 11%, to $9.45 after hours.