Audio problem: In the very final scene where the Scottish pipe band is playing the tune "Amazing Grace", it is apparent that the music is overdubbed and professional musicians were not used for the visuals. When the pipers are slow-marching, the marching is shoddy with different people stepping at different times ("experts" would be very precise). As the camera pulls back past the drummers, it is clear that some of them are beating their drums at a very different time to the sound track.
Audio problem: When Randall walks into Maggie's Hanger for the first time in the film, Maggie is singing. As she goes to greet Randall she hands her microphone to a backup singer to take over, who can be heard taking over the singing, but she doesn't use the microphone for a few seconds.
Audio problem: When they are playing "Patience" for Curtis, he is holding a drink in his hand. After he shuts the music off, when he moves the hand holding the drink, you can hear ice clinking in the glass. However, you can plainly see that there is no ice in his drink. This happens a couple times in the scene.
Audio problem: Kevin screams at the bus driver, "Pull over!" but his lips are saying something like "Move! Move!"
Audio problem: When Neale arrives at the radio station and finds the bankrupt sign on the door, emergency sirens can be heard wailing in the background. The shot changes to a different angle and the sirens abruptly stop. When the shot reverts to the original angle the sirens can be heard again. (01:07:15)
Audio problem: When the ghost boy walks up from the audience, you can hear the steps creak as he walks up.
Audio problem: When Millie comes to see the grieving Beatrix, she presses her face to the door and pleads with her to come out. If you watch the mouth movements of her shadow, they do not match what you hear her say.
Audio problem: When Langdon removes the clue from the Cryptex box lid and takes it to a mirror, Teabing says "Backwards, in the style of Leonardo himself" without his mouth moving. Although much of the shot is shown over Teabing's shoulder, his mouth is visible at the beginning of the shot, and his jaw does not move throughout the rest of the sentence. (01:27:45)
Audio problem: In the pool, when Max says, "What is it, Major Lawrence, that attracts you to the desert?" we hear his voice, but his lips are not moving. In the next shot, his mouth is now moving. (00:34:30)