So I'm watching 60 Minutes west coast HD on Tuner #1 while "The Wire" is recording on Tuner #2. I missed about five minutes of the Bill Romanowski segment and come back to rewind to the beginning, and when I get back to the start and hit Play, all audio is gone. Video is fine, and audio on Tuner #2 is fine. DVR recordings have no audio. I turned on PIP and swapped tuners, and still no audio on #1. I can't do a front panel reboot because I'm currently recording "Brotherhood" and I don't want to screw up that recording. At some point I'll do a reset, but has this happened to anybody else? My 622 has been rock solid until this (of course my wife is sitting right there watching the whole thing unravel).