I had two 722k's installed yesterday. I'm really enjoying the picture so far. I just replaced an old non-HD RPTV with an HD front projector. It looks better than I thought TV could. In the den (with the projector), I have the 722 connected to my receiver. During commercial breaks on HD channels, especially those for other Dish shows, the volume in the rear surround channels is unbearably loud. I have to mute the volume. It's easily twice as loud as the during the show I'm watching. This does not happen on the LCD TV in the bedroom (connected to its own 722); it does not have any surround receiver or speakers. Are others experiencing this problem? I don't think there are any settings I can change on my receiver (VSX-23TXH) that will prevent this other than turning off surround.