Audio problem: When Walt yells at Jesse through the lab's entrance door, the sound is very muffled, as if the door is a major insulator of sound. However, later, when Jesse yells at Walt through the same door, the sound is much clearer, and hardly muffled at all. (00:22:15 - 00:23:55)
Audio problem: After Walt Jr and Skylar leave the room, Marie starts to leave. The camera is focused on Hank once she walks off screen and you can hear the sound of the door closing behind her. It then cuts to showing her suddenly just getting to the door and opening it to walk out.
Green Light - S3-E4
Audio problem: When Walter is berating Jessie at the school parking lot, there is a shot of the back of Walter's head. He is talking but it's clear his mouth isn't matching.
Audio problem: When Jesse rings Jane's phone when it's cut off, Jesse is still pressing buttons but there is no sound, despite there being sound when he pressed buttons before.
Suggested correction: He only presses 2 buttons. Anything else is just something like his thumb twitching, like he's anxious or nervous. You see him call Jane's phone multiple times by only pushing 2 buttons.