CURVEBALLShttp://dailykos.com/story/2005/4/2/10228/95578[LAT] A bitter feud erupted Friday over claims by a presidential commission that top CIA officials apparently ignored warnings in late 2002 and early 2003 that an informant code-named "Curveball" -- the chief source of prewar U.S. intelligence about Iraqi germ weapons -- was unreliable.Former CIA Director George J. Tenet and his chief deputy