Audio problem: Near the end when the family have got back in the car Malcolm says something like "who would have thought a traffic jam could be so cool, we should do this again". Near the end of the sentence we can see Malcolm's mouth and it isn't moving.
Audio problem: When Craig reveals Lois is innocent, his lip movements do not match the audio as he says: "Lois was right all along." (00:21:00)
Reese Cooks - S2-E18
Audio problem: When the girl Krelboyne is talking loudly, you can see her mouth barely matches anything she's saying.
Audio problem: You can hear the new boss speak, but her mouth doesn't move. (00:16:30)
Answer: Francis is only allowed to talk on the phone at school for three minutes a day. I think the code gives him free access to talk to his girlfriend.