WTF! Part II

OK, I got the computer fixed (at least for now), but now I have a question for all the DirecTV Tivo mavens out there. This is something that has been driving me nuts ever since I got the farging thing.

Why does it fill up my hard drive with programs that I’ve zero interest in, have never watched, have never evinced any interest in watching? More to the immediate point, why, when I’m watching Fox News, and have a half-hour of it in the can, and am waiting for Brit Hume to come on, and can zap commercials, does it randomly decide that I’d rather watch Seinfeld, and switch to that channel, thus losing everything on the hard drive from Fox News, so that when I switch back in frustration, I’ve lost the first half hour?