Audio problem: Towards the end there's a firefight between Matrix who wields a shotgun and El Presidente who is armed with a Steyr AUG. The weapon sounds used for the Steyr AUG however are from a MAC 10 or an UZI and don't sound a bit like it. (01:18:13)
Audio problem: When they are putting the Cook's body on the sofa, Wadsworth walks by in the background and says "Careful, don't get blood on the sofa" however his mouth doesn't move.
Audio problem: When Bond steals the cab driver's car after coming down from the Eiffel Tower the words the cab driver yells doesn't match up to the way his lips move. (00:18:45)
Audio problem: When John milks the cow you hear the milk splashing into the bucket but you don't see any. (00:57:05)
Audio problem: When Miguel and Steele are collecting some more of the zombies, Steele says 'Nice hat, asshole,' and laughs. Watch carefully at the end bit: they dubbed a laugh into the movie, but it's painfully obvious that his mouth doesn't move as he does it.
Audio problem: When Jesse and Ron are doing press-ups on the sports field, Ron says "So what about you and that rich babe you've been cruising to school with every day?" You can see that Ron starts to move his mouth a few seconds after the words are spoken, and his mouth doesn't move correctly to the words being spoken either. (00:10:30)
Audio problem: Right before Charley gets thrown into the closet doors, Jerry has him by the throat threatening to kill his mother if she wakes up. In the shots of Charley trying to free himself of the grip, Jerry's lips are moving but no sound can be heard. (00:28:15)
Audio problem: After Chiun gets all of the rings on the bottles, you can see that they have all settled, yet you keep hearing the sound of them still settling through the rest of the scene.
Audio problem: At the end of the movie, after Manny has disconnected the locomotive from the rest of the train which is slowing down, when it stops we can hear it screech. It shouldn't as the train slows down naturally without the help of the breaks, which additionally, as it had been mentioned (by the woman), are not working. (01:45:30)