Audio problem: When Heather is reading her dads note in the car to Silent Hill, the letter and the voice over do not match. (the second paragraph starts off by saying: "But you desire" and the last word right before "I love you" is "place" but through out the reading you do not hear those words.
Audio problem: When the redhead twin shoots the woman creature through the head with an arrow and says "That was for Mika", his mouth does not match up with what he says. (00:47:40)
Audio problem: When Emily picks up the tooth from the box, she says "ew" but if you look in the mirror her lips don't move.
Audio problem: Throughout the entire film, much of the audio is inaudible, and in several key scenes (including most scenes set in cars), you can hear a loud sort-of "crunchy" and windy sound from the microphone.