I got the A21 today for my Over-the-Air antenna and my HR21 since I can't get locals. It setup and worked great. Somehow a much better signal/picture than without the A21. However (and I'm posting here in case it was due to this CE release), when I flipped to my local NBC channel which is in HD, my HR21 popped up a message stating that this was available in 1080p and did I want to switch to Native mode. So, I did! The 720p and 1080i both lit up on the receiver as I had heard happened on the HR20, but then the system locked up. A minute later the picture came back on screen with a major pink overlay on the screen but the audio was gone and all control was lost. I left home to pick my wife up from work and returned 20 mins later to find that the audio was still out and the menus were still locked up. No buttons on the remote or the box worked (even changing channels). I had to do a "red button" reset to get the machine back to normal.