Audio problem: In the end of the movie, when Ben is found by two Swedish backpackers, the subtitles doesn't match with what the the woman is saying. The subtitles say something like "Come on, lets get him out of here", when in fact she says "Herregud hur kom han hit?", which roughly translates as "Oh my god, how did he get here?"
Audio problem: In the church, Brenda lets Joey eat her brains. When she says "Okay, take them baby ," her mouth doesn't move, and her following screams are matched with a closed mouth as well. (01:03:35)
Audio problem: Near the beginning of the film Katie Eddowes tells Mary Kelley 'There's one over there'. As she walks past Martha Tabram and Annie Chapman, we hear some dialogue between them about not having very much luck that night. If you look at all three women, their mouths are not matching the dialogue. They appear to be saying something completely different.
Audio problem: When Claire is in the car about to leave hospital, she turns around to tell Emma to put her seat-belt on. Though you hear her say "fasten your seat-belt sweetheart" - her lips aren't moving when you hear "sweetheart".
Audio problem: When Paris goes to get her money from the hotel room and runs into Ed, in one shot Paris is talking, then it changes to Ed's face and Paris is still talking, but her mouth isn't moving. (00:45:55)
Audio problem: When the children run out of the garden, the girl is screaming, but her mouth is not open.
Audio problem: From a side view, when Alice yells "Come on Jacob, it's time to go home" her jaw moves to other words. (01:13:10)
Audio problem: In the theatrical cut only, there is a scene where Willow goes into Howie's room and wakes him in the morning. She is heard to say something like "Wake up Sergeant", but her lips do not move.
Audio problem: When Carol Anne says "they're here" her mouth doesn't match the words.
Audio problem: In the scene where Marcy tells Paul that he hurt her back (when they had sex) you can hear a clock ticking in the background. But in the scene a few minutes earlier where she talked him into having sex with her, that takes place in the same bedroom, the sound isn't there. (01:05:45)
Audio problem: Malory ejects all of the shells in the shotgun to show she knows how to operate it, but the audio clip is of empty shotgun shells hitting the floor.
Audio problem: When Marcus attacks Simon at the loading dock, Simon attempts to take out his weapon, but Marcus takes the firearm from him before Simon can assemble it. He takes the barrel in one hand and the rest of the weapon in his other hand, but one moment later, he's shown only holding the barrel as he removes the silver nails, meaning he must have dropped or thrown away the other part. However, we never hear any sound of the other part hitting the asphalt, even though Simon picks it up from the ground later during the fight. (00:57:40)
Audio problem: When Halloran and Hunt are discussing orders from the commissioner to exhume Jigsaw, it's clear that several of Halloran's lines have been looped in post. His voice is a bit too loud and a bit more forceful than he appears to be speaking, and at least one word doesn't quite line up with his mouth movements. It can be hard to spot the first time, but if you look for it, it's noticeable. (Confirmed in DVD/Blu-Ray commentary - the actor lost his voice and his lines had to be looped).
Audio problem: In the third segment when Amelia is getting chewed on by the doll, her screams are out of sync with her mouth.
Audio problem: When Noriko tells Kawada that the food that he cooked was good, we hear him reply that his father was a cook, but if you watch him in the background you can clearly see he is just sitting there, and his mouth is not moving at all.
Audio problem: When the zombie guys are breaking the windows at the church, you can hear multiple pieces of glass hit the ground even though almost no pieces fall.
Audio problem: In the mansion, the boys open a secret passage and fall through the floor. They scream after shining a flashlight on a skeleton. Eugene then can be heard whining that he wants to go home, but his mouth is not moving.
Audio problem: When Owen says, "Be quiet, I'm trying to work on this story. It's due tomorrow," you can hear him typing, but there is nothing written on the screen.
Audio problem: In the scene where Doyle, Scarlett and the kids jump into the Volvo estate to escape the gas and infected, a number of references are made to the car having a manual gearbox, i.e. "pop the clutch". Doyle puts the car into second gear and several shots of the gear lever are shown. However, when Doyle push starts the car and they drive off, listen carefully and you will hear the distinct sound of the gear change of an automatic box.
Audio problem: When the Predator is about to shoot Gary Busey, just before Danny Glover blows the door in, listen. The actor playing the Predator is counting to three before the explosion, preparing himself for the effect. Easily heard if you turn your tv up. (01:16:15)