Audio problem: The pitch of an airliner's engine doesn't change dramatically when going through rough turbulence. In the scene with the turbulence - after all is quiet, it almost sounds as if the engines are shut down. And it happens way to fast for it to be the pilots doing it. And why would the pilots speed up when entering turbulence?
Audio problem: Just before Aunt May does her hero speech she tells Peter that he 'Did a very brave thing, telling me, and I'm proud'. There is a pause between each clause of the sentence and the 'Telling me' line is obviously dubbed, the shot is from behind but the sound of the line is different.
Audio problem: Riddick, Kira and the Crematoria escapess are running across the planet surface, through the lava channels. Rounding a corner, Kira has lost sight of Riddick and calls his name, but her mouth doesn't move. (01:11:40)
Audio problem: When Joanna goes to The Simply Stepford Day Spa, Clair begins her Clairobics, and says, "Come on Joanna." Behind Joanna, Clair's reflection shows her telling everyone to do the "spin cycle" but she isn't heard. Then in the shot facing Clair, she again tells them to do the spin cycle.
Audio problem: When Kayleigh, Tommy, Evan and Lenny are putting the block buster in the mailbox, Evan puts the cigarette on the block buster and says it should last Lenny 2 minutes, but his mouth says 10 minutes.
Audio problem: When Fermat and TinTin roll down the hill to escape Mullion, they fall into a small river, and Fermat says something but you can see his lips don't move.
Audio problem: At the end, as Dax rescues Sahara and loads her into the evac shuttle, he steps away from the craft. Bugs are swarming the scene, but it is apparent that Dax is staying behind. Sahara cries out, "You stay here, you die!" and we hear Dax reply, "Murderers don't go home," which is an overdub. His mouth visibly says something very different with several more syllables.