I have three Tivo Premieres, all several years old but purchased at different times so they are different ages. None have been modified or had their drives upgraded. All work fine and none have any of the common signs of hard drive failure like "stuttering" during playback. Several months ago, all three "hung" (audio/video froze or went black, they were non-responsive to the remote, and the yellow lights came on solid). This happened to all three AT THE SAME TIME, possibly at the very same instant, or no more than a few seconds apart. After being puzzled for a few minutes, I removed and reapplied power to all of them, and all started normally. The same thing happened about a month later. Since then, the "hangs" have gradually become more frequent (weekly, even daily, but I don't think more than once per day [yet]). Sometimes, only two had the solid yellow light but all three were hung. I also ping them and try to access their port 80 interface to verify they are non-responsive to the network. Sometimes, I would wait a long time (several minutes to a few hours) to unplug them, but it seemed the problem never corrected itself, so I always ended up repowering them. But in the past week or two, all three automatically reboot themselves shortly after the hang. The two with the solid yellow light seem to hang and reboot at the same time (perhaps seconds apart), while the third one without the solid yellow light reboots usually a couple minutes before the others, but occasionally after the others. I find it hard to believe that all three units are experiencing the same hardware failure. It seems much more likely that this is a firmware, software, or possibly a network issue. I recently disabled all the external accounts (VUDU, Yahoo, Netflix, Pandora, etc), and disabled the "Network Remote Control feature" thinking there may be an external influence. There were no problems for a few days, making me think this had helped, but the problems are back to daily now. Any ideas? Termites? Aliens?