I am long time Dish customer and just made the move to HD three weeks ago with the addition of a 722K receiver. Six or seven times since I had this installed, I lose the ability to tune in some of the HD channels. I get the error message telling me to change the channel or reset the receiver by pressing the power button for ten seconds. When this happens, it doesn't affect all my HD channels, but only some of them and not usually the same ones. There also doesn't seem to be a pattern for time either, it happened three days in a row once and then not again for three or four days. Resetting the receiver always clears the problem. Has anyone else seen this? I haven't called support because I know the CSR will just tell me to reset the receiver.