This has perplexed me ever since I've gotten my S3 and I just noticed it again so I figured I'd ask. Every once and a while I'll turn on my TV and find that my S3 has tuned the same channel on both it's tuners. This is impossible to do manually since if tuner 1 is on channel X and tuner 2 is on channel Y and you are viewing channel Y and try to change to channel X it will just swap tuners. So the TiVo does this by itself. It seems to have something to do with suggestion recordings, but I was under the impression that the tuner should go back to the old channel when done recording the suggestion which wouldn't explain how both tuners end up on the same channel. Anyone else notice this or have any insight as to why this is happening?