Microsoft (MSFT) - Get Report was down 1.4% in early trading after a report indicated that the company was the target of another antitrust examination, this one involving its investment in office software maker Corel (CORL) . The Wall Street Journal reported that regulators are also examining Microsoft's plan to buy Great Plains, a business software company. Microsoft said it is cooperating with authorities and sees no issues of concern. Corel was up 3.8%.