Stock futures were busy and widely mixed ahead of Thursday's open, as Apple (AAPL) dragged tech futures lower after its disappointing results late Wednesday. Nasdaq 100 futures crumbled 42 points. S&P 500 futures were off three points, while Dow futures climbed a modest seven points. Early economic news showed initial jobless claims slipped just over 1% to 330,000 in the week ended Jan. 19, the Labor Department reported. The number, a second