Audio problem: Just after the car crash, when the zombies are taking Starla, Bill and Kylie yell after her, but they call her Carla.
Audio problem: When Doug is staring at the terrorist and says, "I can see him, he's right in front of me", you'll notice that his mouth moves a little before words are actually said. This is because he first says "Jesus", but they took it out because the character playing the terrorist is Jim Caviziel, who played Jesus in Passion of the Christ. The filmmakers did not want to get a laugh out of that line which it inevitably did in test screenings. (01:06:10)
Audio problem: When Jenny makes the cab stop, Matt says something, but his lips never move.
Audio problem: When Dr. Grant is explaining the plan to Larraby, when Larraby says "Is that our only option?", his mouth doesn't move.
Audio problem: Throughout the film, no matter who is using the blade weapon that attaches to the wrists, like the one given to Steven Seagal at the arsenal scene, the sound when used is like a metallic sounding blade instead of the carbon or graphite blades.
Audio problem: Daxus is about to cut open Six's head with the circular saw, and he stops when he hears the alarm. In the next shot, the saw isn't spinning anymore, but is still making a noise. (01:16:50)