boosted by a mix of bargain hunting and short-covering in active volume. The S&P 500 rose 8.89 to 1089.84 while the Nasdaq Composite, down through much of the session, gained 8.32 to 1724.56. The S&P 500 slipped 1.2 percent on the week but is down only 0.6 percent over the last two weeks. The Nasdaq has suffered more, down 4.4 percent on the week and 5.2 percent over two weeks. The Dow Industrials rose 133.47 to 9968.15 on Friday, up 0.6 percent on the week. Accounting worries continued to smolder, with software firm Computer Associates confirming prior reports that it is the subject of still undetailed government investigations. The company, which fell 2.95 to 15.95 [CA] on the day, is also facing liquidity problems, drawing on credit to pay other credit as it is now blocked from the corporate debt market.