All Americans - November 6, 1962 - S2-E14
Audio problem: During the speech where Al tells Sam to quit (to force Chewie to play), Sam says he can't quit but his mouth doesn't move for a couple seconds after the words start playing.
Sea Bride - June 3, 1954 - S2-E21
Audio problem: When the little girl is dragging her sister across the room to get her to meet Sam at the pool, she says, "He's waiting at the pool for you," but her mouth doesn't even come close to mouthing those words.
Mirror Image - August 8, 1953 - S5-E22
Audio problem: During Sam's conversation with the bearded Russian miner, each of them plainly mouths the word "stone," but for some reason, the word is both times dubbed over with "slate." (00:33:10)
Disco Inferno - April 1, 1976 - S2-E2
Audio problem: When Sam says "I'd rather be dead," his lips don't move in sync with the words. (00:01:35)
Leaping in Without a Net - November 18, 1958 - S2-E19
Audio problem: In the beginning of the show, when Sam's father tells him to get down, Sam climbs down and falls off the net. When he hits the dirt it makes a sound like he's hitting a board.
Maybe Baby - March 11, 1963 - S2-E20
Audio problem: When Sam is looking in the mirror talking to Al, he says, "Would you look at me? I've got a gold tooth." However, the reflection doesn't mouth the first part and doesn't even say the second.
The Great Spontini - May 9, 1974 - S3-E8
Audio problem: When Jamie says, "Where's your sense of humor?" her lips aren't moving, or are out of sync. (00:26:30)
Good Night, Dear Heart - November 9, 1957 - S2-E17
Audio problem: When Sam and the Sheriff are on the dock the Sheriff is talking through a shot into the next one, except his mouth isn't moving during the last seconds of his line.
Her Charm - September 26, 1973 - S2-E15
Audio problem: When the two bad guys are chasing the girl through the dark forest, one says "it's too dark," the girl screams, and the other says, "who needs light?" - but both say these without moving their lips.
M.I.A. - April 1, 1969 - S2-E22
Audio problem: When Sam, dressed as a guru, is talking to Al about Beth, Al calls the lawyer a "scuzzbag" but he mouths "scumbag." Guess it couldn't get past the censors.
Nuclear Family - October 26, 1962 - S3-E21
Audio problem: Just before the dog carries in the sack of shotgun shells, Mack and Sam have an argument, and Mack's dialogue is very poorly looped. Throughout the scene, the sound is out of sync with his lip movements. (00:33:00)
Thou Shalt Not... - February 2, 1974 - S2-E7
Audio problem: At the dining room table, we hear Karen's voice say "It's all right, Uncle David." But her lips don't move. (00:14:00)
8 1/2 Months - November 15, 1955 - S3-E12
Audio problem: Sam and Al are walking along the road when they come across the father of the baby. Sam tells Al that he's just a boy. Al replies that Sam is just a girl. Al's mouth appears to be saying "guy" or something else and the line is dubbed.
Disco Inferno - April 1, 1976 - S2-E2
Audio problem: When Chris is performing, and we see his dad watching, one of the scenes has poor audio sync. The music is ahead of his singing.
A Portrait for Troian - February 7, 1971 - S2-E11
Audio problem: Near the beginning in the tomb, a woman says "he's been dead for three years." Her mouth doesn't match what she is saying.
Animal Frat - October 19, 1967 - S2-E12
Audio problem: A dog runs by Sam chasing one of the frat pledges. It's barking according to the audio, however the dog does not bark.
Answer: Sam threw items off the raft to lighten the load, so it wouldn't sink, in doing so he made the raft less heavy. Which made easier to float with the currents, if it was heavy the raft would have moved slower and not moved so far.
Except that Al said that immediately after throwing stuff out of the boat four hours passed and it was shown that they didn't really move from where they were. They were still in the same spot. Forgot to ask this too. When Sam and Vanessa are stranded on the island, one of them, can't remember who, did something and when Al appears, he tells them that because of it, time had suddenly skipped several more hours and if the event hadn't been interrupted, they would have been rescued by a boat. So, what happened on the island that once again caused time to speed up? It seems kind of strange that time could move so quickly on the island, especially since it was still day time and it never showed any sort of changes like the sun or clouds moving.