Audio problem: In the European version, Taco Bell is replaced by Pizza Hut, however, when Huxley says to John Spartan that they're going to Pizza Hut, we see her lips say "Taco Bell." (00:57:00)
Audio problem: After John Spartan crashes through the police station sign he says, "All I need is a needle and a thread." But when the camera is behind him and he says the line, "I really didn't say that, did I?" his mouth doesn't move when his face is in frame. (01:35:35)
Answer: I'm assuming you're referring to when Simon says "Damn, I'm possessed!" He was hacking the machine when he said it, perhaps he'd corrupted the program or shut off the microphone as a side effect?
Grumpy Scot