From E & P:
At the Oct. 31 briefing, David Gregory of NBC News stated the following question to McClellan about White House aides Karl Rove and I. Lewis Libby: "Whether there's a question of legality, we know for a fact that there was involvement. We know that Karl Rove, based on what he and his lawyer have said, did have a conversation about somebody who Patrick Fitzgerald said was a covert officer of the Central Intelligence Agency. We know that Scooter Libby also had conversations."
The official White House transcript states that McClellan's response was "I don’t think that's accurate."
But two outside news agencies, Congressional Quarterly and Federal News Service - which provide transcripts for a fee -both reported the response as "that's accurate."
The differing accounts have sparked a flurry of buzz on numerous blogs, such as thinkprogress.org, Wonkette, Eschaton and DailyKos. They say a video of the press briefing reveals McClellan saying "that's accurate."
White House officials contacted the news outlets and ask for a change to their versions of the transcript. [and they both refused having clearly heard McClellan say "that's accurate."]
When asked about the fact that the White House version contradicts video accounts of the briefing, [WH Press spokesman]Perino added, "the White House stenographer was in the room and I was in the room" and they heard McClellan say "I don't think that's accurate'."