Among the companies whose shares are expected to see active trade in Thursday's session are Marriot International Inc., Constellation Brands Inc. and Apple Computer Inc.

Acuity Brands (AYI) is expected to report fiscal fourth-quarter earnings of 85 cents a share, according to analysts polled by Thomson First Call.

Centennial Communications (CYCL) is seen posting fiscal first-quarter earnings of 5 cents a share.

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Constellation Brands Inc.'s (STZ) fiscal second-quarter profit is expected to be 43 cents a share.

Helen of Troy Ltd. (HELE) is seen reporting a per-share profit of 28 cents in its fiscal second quarter.

Marriot International Inc. (MAR) is expected to show a per-share profit of 30 cents in its third quarter.

Saba Software Inc.'s (SABA) fiscal first-quarter earnings are expected to be a penny a share.

Solectron Corp. (SLR) is seen reporting fiscal fourth-quarter earnings of 5 cents a share.

Vail Resorts Inc. (MTN) is expected to post a per-share loss of 79 cents in its fiscal fourth quarter.

After Wednesday's closing bell, Apple (AAPL) said Chief Executive Steve Jobs knew that some company stock options had been backdated, but he did not receive any of them and was not aware of the accounting implications. The company also said former Chief Financial Officer Fred Anderson has resigned from its board.

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American Eagle Outfitters (AEOS) raised its third-quarter forecast after turning in better-than-expected same-store sales from September. The retailer said it is now looking at earnings per share in a range of 61 cents to 63 cents, 5 cents ahead of its previous range.

Arrow International Inc. (ARRO) said fourth-quarter net income rose, as revenue gained, to $17.6 million, or 39 cents a share, from $5.04 million, or 11 cents a share, during the same period in the prior year. Quarterly revenue rose to $129.2 million from $114.3 million in the prior year.

Citi Trends Inc. (CTRN) said September same-store sales rose 8.3 percent from the same period in the prior year. Analysts had expected growth of 7.7 percent. The retailer added that total monthly sales rose 27.2 percent to $28.5 million from $22.4 million last year.

Copart Inc. (CPRT) reported fourth-quarter net earnings of $31.6 million, or 34 cents a share, up 26 percent from $25 million, or 27 cents a share, during the year-ago period. Quarterly revenue rose to $137.2 million vs. $110.6 million.

Diodes Inc. (DIOD) said it now expects third-quarter sequential revenue growth will be slightly more than 11.5 percent. The subminiature devices company said its prior growth view was for 9 percent to 11 percent.

Dobson Communications Corp. (DCEL) said it added 23,500 net subscribers in the third quarter. For the same period in the prior year, the wireless services provider reported a total reduction of 24,100 subscribers.

Fred's Inc. (FRED) said its same-store sales rose 5 percent during the 5-week period ended Sept. 30. The Memphis, Tenn.-based operator of discount general merchandise stores said total sales for the month increased 10 percent to $160 million compared with the year-ago period.

Hooker Furniture Corp. (HOFT) said third-quarter net income rose, as restructuring and asset impairment charges fell, to $1.21 million, or 10 cents a share, from $664,000, or 6 cents a share, during the same period in the prior year.

Hot Topic Inc. (HOTT) reported a slump in same-store sales for September and said its third quarter profit is apt to be at the low end of its hopes.

Ikanos Communications Inc. (IKAN) cut its third-quarter revenue forecast and issued a fourth-quarter outlook below analysts' view. Shipments have been limited due to product delays and manufacturing constraints.

Immucor Inc. (BLUD) posted quarterly results that beat analysts' forecasts due to strong sales of its blood diagnostics systems, but the shares lost ground as the company said it now expects to launch the latest version of its Galileo automated blood bank system in its fiscal fourth quarter instead of the third.

Intermec Inc. (IN) said its now sees third-quarter revenue of $192 million to $196 million, compared with its prior view of $230 million to $240 million. The supply chain technology concern said the revised outlook reflects an estimated 20 percent decrease of System and Solutions revenue, and a 5 percent decrease of Service revenue, compared with results during the same period in the prior year.

Medtronic Inc. (MDT) said it has received CE Mark approval for its Melody transcatheter pulmonary valve and Ensemble transcatheter delivery system. The company said the system is the first of its kind to treat congenital patients with structural heart disease requiring pulmonary heart valve replacement.

Men's Wearhouse Inc. (MW) said it now expects third-quarter earnings of 52 cents to 54 cents a share for the period that ends Oct. 28, and adjusted earnings of 54 cents to 56 cents a share. The company had previously said it expected base earnings of 49 cents to 54 cents a share and adjusted earnings of 51 cents to 56 cents a share.

Openwave Systems Inc. (OPWV) said a special board committee investigating the company's stock-option practices has determined that the measurement dates for financial accounting purposes for certain grants differ from recorded grant dates, and will likely cause the company to restate its results.

Oxford Industries Inc. (OXM) reported first-quarter net earnings of $11 million, or 62 cents a share, down 21 percent from $13.9 million, or 79 cents a share, during the year-ago period. The apparel company posted revenue of $284.1 million vs. $268.5 million.

Par Technology Corp. (PTC) said it now expects third-quarter earnings of 4 cents to 7 cents a share on revenue of $49 million to $50 million. Analysts polled by Thomson First Call are currently forecasting third-quarter earnings of 15 cents a share on revenue of $56 million.

Parker Hannifin Corp. (PH) said its September orders rose 10 percent from the same month last year, helped by a 17 percent rise in overseas industrial orders and an 18 percent gain in its aerospace segment on a rolling 12-month average basis.

Qwest Communications International Inc. (Q) said it has approved a share buyback of up to $2 billion over the next two years.

Siga Technologies Inc. (SIGA) said it has terminated its merger agreement with PharmAthene Inc.

Starbucks Corp. (SBUX) said its September sales at stores open at least 13 months rose 6 percent, ahead of what Wall Street had expected.

Veritas DGC Inc. (VTS) said fiscal fourth-quarter net earnings fell to $6.5 million, or 16 cents a share, from with $46.2 million, or $1.31 cents a share a year ago. Revenue totaled $178 million, up 31 percent from $137 million in the year-ago quarter.

West Marine Inc. (WMAR) said its same-store sales for the third quarter rose 2.4 percent. The Watsonville, Calif.-based retailer of boating supplies and accessories said that total sales for the quarter increased 3.7 percent to $195.6 million.

Zumiez Inc. (ZUMZ) said its same-store sales rose 14.9 percent in September. Analysts had expected a gain of 5.7 percent for the month. Total net sales for the 5-week period ended Sept. 30 increased 47.3 percent to $28.7 million.

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