Audio problem: When Lizzie is performing at the end of the movie at the awards show, at the part where we see her from the back facing the blue light, her voice sounds like it's changing. It seems like it's someone much older singing, or the synthesizer went wrong. It just obviously isn't Lizzie's voice anymore.
Audio problem: When Alex is trying to talk Emma into staying as they walk down the stairs in Alex's apartment building, Alex mouths something completely different from what is being said.
Audio problem: When Stifler is driving his car away after he wrecked the flowers, he says, "Fu**ers, it's not my fault," but it's visible through the window that he's not saying anything.
Audio problem: When trapped underwater in the net at the Black Castle, Peter pulls out his knife from his small leather sheath underwater and we hear a metallic rasping sound which it should not make since it isn't scraping metal. (00:49:55)
Audio problem: When John confronts Selima about the baby and they've walked out of the house and down the steps, from the side of her face you can see Selima's lips moving even though there is no sound coming out.
Audio problem: Just after Molly gets fired and she sees Neal while crossing the street, he says something like, "...been able to write a decent song since I last saw you..." His lips don't match what he's saying.
Audio problem: During the scene where Ada and her father are talking about the farm, and how they will manage come winter, Ada says : ...."But with no-one left to work this place, nothing to buy, nothing to buy it with".... her mouth only starts moving to what she is saying half way through the sentence.
Audio problem: During the wedding part at the end the movie, when Paul announces he doesn't want to marry Kerry, Kerry looks at him and says, "Paul?" but you can see she is really saying, "What?" The voiceover comes in late as well. This is on the video version.
Audio problem: When Kelly starts talking about colon flushing Charlotte gets up to join Bob at the bar. In the background Kelly continues her story, but her mouthing and gestures are not at all in line with her words. (00:37:20)
Audio problem: When Joanie and Tommy are eating dinner at Betty's home, there's a close-up profile shot of both Joanie and Tommy right before they kiss. Tommy says to Joanie, "Come here you," but his lips don't move.
Audio problem: Tom is fighting TJ and we hear glass breaking as TJ falls backwards against a curtain, but then the curtain gets pulled down and the unbroken window is seen to the right of where the curtain was hanging.
Audio problem: When David the Prime Minister is trying to get Natalie's Octopus Brother out of the limo, Natalie laughs but we don't hear it. (01:47:29)
Audio problem: Buddy throws away Dave's CD's, which make a breaking sound. Why? It's not like he threw them from across the room. He simply drops them in the trash can.
Audio problem: When Tom wakes Sarah and says, "Sweetie, our plane leaves in an hour," she slams her face into his. The loud, distinctive, punching sound effect is completely overdone. (00:29:35)
Audio problem: At the end of the movie, Marilyn and Miles have their first "real" kiss. After their lips touch the first time we see a shot of Miles' profile. You can tell that his lips are moving like he's saying something, but no sound comes out of his mouth.
Audio problem: When Colin Firth's mother shoots down the tree where the bird is resting, and the branch falls, you never hear the sound of the branch hitting the ground.
Audio problem: During the girls' follow-up discussion after Tracy has sex with Ravi, Evie laughs and says, "What? We didn't go over that one." However, her lips aren't moving when she speaks the second sentence; the second part was obviously dubbed in later.