The New York Times offers a mea culpa regarding the crappy job they have done covering the war in Iraq:
we have found a number of instances of coverage that was not as rigorous as it should have been. In some cases, information that was controversial then, and seems questionable now, was insufficiently qualified or allowed to stand unchallenged. Looking back, we wish we had been more aggressive in re-examining the claims as new evidence emerged — or failed to emerge.... Editors at several levels who should have been challenging reporters and pressing for more skepticism were perhaps too intent on rushing scoops into the paper. Accounts of Iraqi defectors were not always weighed against their strong desire to have Saddam Hussein ousted. Articles based on dire claims about Iraq tended to get prominent display, while follow-up articles that called the original ones into question were sometimes buried. In some cases, there was no follow-up at all.