Last night/early this morning on my Premiere 4 at around 12:45AM, I had noticed that the video was hung on something I was watching (actually dubbing to my other recorder to watch faster than realtime then I could nuke it). Anyway, going back to live TV or trying to show any of the recordings showed a completely black screen. I *was* able to stop a recording, and while in this state I was able to successfully transfer the (partial) recording to my computer, and it was complete, at least for that small section. I even tried starting a new recording, and let it go until the scheduled recordings were done. What really happened was no recording was happening after the problem started… (All of the recordings were truncated at the same time, and the new recording wasn't there at all after a reboot, since there was no signal). I did see a different message when I was trying to change channels on the 4th tuner when the problem was happening -- something along the lines of it not being able to get the signal, "trying again".. Not the normal "Searching for cable signal" message. A reboot fixed things (but of course I lost one recording. Luckily on my other Tivo I had in the buffer one of the shows recording, and was able to get the rest of ONE of the other shows).. Weirdest problem I've seen on a Tivo. Note I was doing transferring at this time, and possibly APPROXIMATELY at the same time, one of my transfers was failing with the same weird issues that sometimes happen -- e.g. it can't transfer from paused point. I get the same weird errors in kmttg once in a while, and usually just waiting a few minutes fixes it. This might be completely unrelated, but it was happening at about the same time.