Several bugs -- some more serious than others -- have been introduced through iTunes 9.2, users say. Perhaps the most critical is an inability to play videos downloaded from the iTunes Store; affected people say iTunes will ask a user to authorize a computer for playback, then insist that the computer is already authorized, and display a black or gray screen when actually trying to watch a film or TV show. Downgrading to iTunes 9.0.x is said to eliminate the authorization requests, but not allow working video. A complete archival and reinstallation of Mac OS X is
