Here is my situation. I DO NOT believe my recorder has anything to do with this, but i posted at the dtv forums and someone there seems to be implying that it does.
My recorder is a magnavox 515H. I have directv as well, and it includes local channels.
The past two weeks I recorded an NBC show, The New Normal, and about the last 3 minutes the directv screensaver came on. This has never happened during any show before. I could still hear the show, but the picture was the screensaver with the directv logo running through it. I posted it on the directv forums because it seems like it has to be a directv issue right? I've never seen the screensaver come on for local station outages (unrelated to directv). Someone there at the directv forums said how can I possibly record since I don't have a directv dvr. I replied that I had an HDD recorder. They then asked how it was hooked up to the dtv. It's hooked up the traditional way-from the outputs on the dtv receiver to the inputs on the recorder. Just to make sure I am not way off base, there isn't any way my 515 can be causing this, right? I am not using the tuner at all for this recording. Just the L1 input and the directv receiver. It has done it twice now, both times during the same show and both times during the last few minutes of it.
From now on I will record this particular show with the over-the-air signal instead (using the 515's tuner) but I am still curious if it could be anything but a directv problem.