I have a new HR10-250 that is having a problem with HD channels. Specifically, I get heavy pixelization and audio dropouts at random times on HD channels (HBO, HDNet, etc). I do not experience the problem on the local OTA HD channels. This is my second unit. The first had the same issues and was replaced. (DirecTV came out and looked at the setup and said it looked like a problem with the first unit's hard drive.) When I hook up my old HD receiver (a Sony non-DVR) the picture is fine. As this is my second HR10-250 unit with the problem, I am thinking it is probably something else. But I can't think what it might be. Can anyone help with a diagnosis? Thanks so much.