Had to chat with DirecTV support last weekend, both my DVRs HDDs failing. One with 3 lights in the ring, and hard code error message. The other with similar symptoms, but not totally failing yet. HR21 and HR23. So I was expecting two DVR's, only one shows, and DirecTV claims ZERO record of my weekend conversation. After supplying them the transcript, a second DVR is belatedly on the way. So, replacement DVR number one installs, and works. Except.... it reboots itself every so often, for no apparent reason, with no error messages. It's an HR23. So in this room, over the last few years, I have had one HR2x replaced with another used HR2x for bad power supply. That one replaced with another used HR2x for a bad HDD, and now this used HR2x exhibiting weird symptoms. I swear, these people can't get out of their own way for nothing. So this message is both venting a complaint over a lousy experience, as well as a question - what on earth would make a DVR summarily reboot itself at random times? Every time it does so, it also shows a screen saying "downloading additional software" that stays up for about 5-10 mins.