Stocks limped higher today, with the Dow up 75 points after yesterday’s 382 point massacre. A 2.9% financial sector rally led the S&P 0.8% higher, but unease remains over the lack of details in Timothy Geithner’s new economic rescue plan. The Nasdaq, meanwhile, inched up 0.4% despite a steep drop from BlackBerry maker Research in Motion, which slashed its fourth-quarter guidance. (More stock market stories.)