I have the newest version of itunes. I just recently down loaded four tv episodes because I missed them. The first two episodes of Lost played fine. When I played Battlestar Galactica, it would start out normal but as time passed, more frames would dissappear. Sound stays the same but if I miss an important thing I can't see it. Some times I'll miss up to 3 seconds of video or more at a time! What's going on?!