The news on Microsoft came after markets closed virtually unchanged after a topsy-turvy day. The Dow Jones Industrial Average, off 80 points on Wednesday after Boeing's results disappointed, closed down 15.50 points or 0.2% at 10,205.28. The Nasdaq Index slipped 8.24 points or 0.5% to 1802.43, 50 points above where it rested at Monday's opening buzzer.