Shares of WD-40 ( WDFC) slipped in late trading Monday after the maker of lubricants and household cleaners beat Wall Street's third-quarter expectations, but gave a disappointing full-year forecast. For the quarter ended May 31, the company posted income of $7 million, or 42 cents a share, up from $6.4 million, or 38 cents a share, a year ago. Sales increased 12% to $73.1 million. Analysts polled by Thomson First Call had forecast earnings of 38 cents a share and sales of $72.1 million. For fiscal 2006, WD-40 sees earnings of $1.55 to $1.65 a share, narrowed from an earlier projection of $1.50 to $1.65. The company cut its sales projection to $285 million to $290 million from an earlier forecast of $288 million to $299 million. Analysts predict full-year earnings of $1.69 a share, with sales of $294.1 million. WD-40 shares sank $2.58, or 7.6%, to $31.30 in after-hours trading. Alcoa ( AA) shares moved lower after the aluminum giant posted weaker-than-expected revenue for the second quarter. The company reported a profit of $744 million, or 85 cents a share, up from $460 million, or 52 cents a share, a year earlier. Earnings from continuing operations rose to $752 million, or 86 cents a share, from $496 million, or 56 cents a share, a year earlier. The results included about 4 cents a share in charges tied to its U.S. labor contracts and strike preparations. Analysts expected earnings of 86 cents a share. Alcoa's revenue rose to $7.96 billion from $6.69 billion a year earlier, but missed Wall Street's forecast of $8.02 billion. Shares fell $1.46, or 4.4%, to $31.95 after hours. Websense ( WBSN) put its second-quarter earnings and revenue within its guidance, though it reduced its estimate for billings. The maker of Web-security and Web-filtering software projected net earnings of 16 cents to 17 cents a share. Non-GAAP earnings, which exclude stock-based compensation expenses and the related tax effects, are expected to be 24 cents to 25 cents a share. The earnings estimates match its prior guidance.