When I'm on the treadmill, I like to watch movies on my iTouch. It's 3rd gen, 64GB, and about 8 months old. Everything was fine, and then I upgraded to iOS 4. Now, it goes 5 to 10 seconds, then freezes the video, with the audio still playing. I've turned off everything I can think of. I shut down the other apps (multitasking), turned on airplane mode, turned off pushes, and nothing has made a difference. I even tried rebooting, still no good. Any advice? It's ripped @ 480x272 MP4, which played just fine on the last OS version. I really don't want to have to re rip all my movies, and I'm not even sure if that's the problem.