Mutant Liberation Begins - S1-E2
Audio problem: When Magneto is saying, "Should I successfully vindicate myself in what I will generously assume is a fair trial," his mouth movement is out of sync with some of the dialogue.
Such Inward Secret Creatures - S1-E5
Audio problem: After Paul and Amy make love, Paul puts his pants back on and stands back up. He says, "What?" There is a strangely timed "what" right after that. It's an exact replica of the first one. There is an audio overlap from the other angle here.