lgodave, I understand now. Good question to throw out. I'm looking forward to the replies too.
Just had a HR-22 HD-DVR drive go bad. Started with a jerky screen, then bang, nothing but lots of lines and fuzz. Hard re-boots do nothing. About to call DTV about a replacement. I hear that they will ship you a replacement for $20 now that all the receivers are leased. ( since I don't have the protection plan ) That's cheaper then buying and swapping out the drive.