I was wondering if anyone else has had these issues. On playback of shows, especially HD shows, I've had issues with audio skips, video getting blocky, and jumpy and throwing audio out of sync. And one time, while watching Singing Bee recording the playback just stopped and wouldn't budge until I mashed some keys and it started again. This seemed to start happening after the addition of all the new HD channels. I'm not sure if that is related or not, or if this is a hard drive issue. Any thoughts?