I thought this was just an issue with my 3gs, but i'm having problems on my 4g. The video will all of a suddne, not movie specific, the audio will stop and the movie will keep playing, or the video will freeze and the audio will continue to play. I never had these issue on ios's previous to 4.1. It's really starting to get annoying. Anyone else have these issues? It appears iTunes 10.1.1 is supposed to fix some video playback for music videos, would that cover this?