The video for things in Itunes keep freezing up. I let video podcasts load up, they go a bit, sometimes for 15 minutes max, then freeze. Then they won't restart or anything. I rented a movie on itunes, played it, and it froze halfway through. It would not let me go forward via chapters (skip over the frozen part), etc. I repayed from several previous spots, and it always froze in that one spot. I pause the vids on itunes even, to let them load more, but if I do, often they won't ever play again. Answers? I tried resetting to factory settings, but it did nothing. Regular audio podcasts are fine, just the video. Is there some proper way to load them up first? Help!