Audio problem: When Roy shoots the first two guys above them right after he stops the car you can't hear the shots when he starts shooting: there is a delay of about half a second. (00:28:15)
Audio problem: During their conversation on the plane, when Cameron Diaz tells Tom Cruise about the wedding gift for her sister being a car, during shot when she says "kinda like a present from my dad too you know" you can see her mouth doesn't move. It's not because of the angle of the shot either; you can see her mouthing moving from the same angle during other parts of the conversation.
Audio problem: When Eduardo is telling Antonio about Roy Miller over the phone, Antonio responds to him (in Spanish), but his words do not match the movements of his mouth at all.