Audio problem: When Sidney comes running to the house and she sees Dewey come out with the knife in his back she screams "Dewey!" but her mouth says "no!" (01:23:45)
Audio problem: In the scene where Leo explains how he launders the drug money and Roger says "You're a cheat", Leo says "Come on, everyone cheats a little, look at the pentagon." But when he says "look at the pentagon", it's dubbed in because the sound of his voice doesn't match his other dialogue, and if you read his lips it doesn't match either.
Audio problem: When Kevin plays the tape of his Uncle Frank singing in the shower, it starts with "We know a guy that can really do the cool jerk" twice. Yet, when he first tapes his Uncle, he doesn't start the recording until after that has been sung. The recording also sounds very clear. When he tapes him the door is closed, but the tape sounds the same throughout. Also, when his Uncle says he's gonna "slap him silly" Kevin shuts the door behind him and you can hear it shut. On the tape there is no sound of the door shutting.
Audio problem: Just as McClane and Farrell are about to leave the Eastern Power Hub, Farrell goes on a long rant and his mouth does not match the words he is saying. [In the unrated version of the film, the rant concurs with Will's mouth movements, but the mistake is valid for the regular version.]
Audio problem: When Miss Orchid is making dinner for Wong Kei-Ying, she turns to him and tells him about a special chili that is made. When she turns back to her cooking, she tells him how hot it is but her mouth doesn't move.
Audio problem: In the scene at the orphanage, when the boy runs down to the other boys reading the pornographic magazine, none of their mouths move when you hear "Look at those knockers".
Audio problem: In the scene where Alfred is stitching up Bruce, Bruce says "I wanted to inspire people." As he says "people" the shot changes and his lips aren't moving, but the audio track continues.
Audio problem: In the beginning of the movie when Clark is preparing to light the Bar-B-Q, He squirts charcoal fluid out of a plastic bottle. Then Ellen squirts more fluid onto the coals out of the same plastic bottle. Listen to the sound; it is the distinctive sound of a metal charcoal lighter fluid bottle. (00:07:45)
Audio problem: When Handratty is in France telling Frank that there are 20 officers outside, you can see when the camera turns to Frank, Handratty's mouth is still moving despite the fact that he is not talking. (01:55:40)