Ever since L511 and now L512, I can be watching a program while it records. Sometimes I'll be a few minutes behind the actual recording to skip through commercials. Eventually I lose video and audio for a few seconds. Then the video comes back, but no audio. I use my 622 in single mode and switch back and forth between tv1 and tv2. The only way to get the audio back on BOTH tv1 AND tv2 is a reboot. Anyone else experienced this? It is so FRUSTRATING !!!!!