I have unfortunately Comcast cable with HD. I have been using the HD DVR box for awhile now. Well tonight I was trying to watch Heroes on its HD channel and could not watch it as the picture would get distorted and the sound would sound robotic like. What I'm want to know is has anyone had the some problems with their Comcast HD DVR box and is there a way to fix the problem. I hope this is the right place to ask this. If not could someone point me where. Thanks.