CNN/USA Today/Gallup poll of 609 adults taken September 5-6 shows: Blame Game -- 13% said George W. Bush is "most responsible for the problems in New Orleans after the hurricane"; 18% said "federal agencies"; 25% said "state and local officials"; 38% said "no one is to blame"; 6% had no opinion. -- 29% said that "top officials in the federal agencies responsible for handling emergencies should be fired"; 63% said they should not; 8% had no opinion. MORE Government Performance -- 10% said George W. Bush has done a "great" job in "responding to the hurricane and subsequent flooding"; 25%...