AS I have posted in a previous post, OTA channels drop sound and video lags and sometimes pixelates during playback of recorded OTA programming. Tonight was HORRIBLE watching Hells Kitchen. Every 20-30 seconds, the sound would drop out. In order to hear, we have to rewind and then it plays. Super annoying to watch OTA programming, if it wasn't high def, I would not worry about it. Sadly HD locals are not slated for our area any time soon, so I am hoping someone can shed some light on how to correct his problem. I have tried reformatting, disk scans, reboots, sound to just the TV and no tuner. Make sure that two recordings do not occur at the same time. We have tried everything suggested here. This nvere happes when you watch it live, pause it or record it and BINGO...crappy playback. We have a HR20.