Several days ago, I retrieved my AM21 from its closet storage and installed it on my primary DVR, an HR54-700. It seems to be working just fine. Yesterday evening, I noticed something strange in the guide listing on my bedroom HR24: Note the 36-1, 36-2, and 36-3 channels, all digital channels NOT coming from the satellite. These are OTA channels that I see on the on the AM21 installed downstairs. Why are they appearing in the HR24 guide? So, I selected one of the channels and received this error: Anyone know what is going on here? Why are these channels appearing on the HR24? So, since I didn't want the guide cluttered with a bunch of invalid channels, I decided to edit the channel list. When I pulled up the editing screen, none of the invalid channels are checked to appear in my custom list: So why are they appearing in the guide if they are not checked? I exited the editing screen, and the invalid channels disappeared from the guide! This is really bizarre behavior. Anyway, the channels are gone now, so I am no longer concerned. I was curious as to whether anyone has a theory as to what is going on here.