This has happened twice in the several months I've had version 3.0. Sometime in the middle of the night, TiVo will turn itself off. The first time, a week or two ago, I'd assumed my son (who was the last to use the TiVo the night before) had accidently hit the Standby button when shutting off the AV system. But, it happened again last night. And I was the person who shut everything down. When I plopped down this morning to check on what had recorded last night, I noticed that no lights were lit on the TiVo and nothing was hitting the TV screen (via the S-Video/RW AV jacks). The last time this happened, I neglected to check the Standby button. So, I did so this time. Nothing. Tried changing channels, Instant Replay, Advance to End, etc.. Nothing. Pulled the plug and re-plugged (as I did last time), and everything came up fine. The last time it happened, the recording light promptly came on. There were two partial recordings in Now Playing. So, TiVo was recording (I guess like it thought it was in Standby). But, it was recording the wrong channel. I checked Now Playing this time, and several shows had recorded overnight. Prior to, and including, a 2:20am Suggestion recording of Tremors (which ran to about 4:30am) on TBS, everything recorded correctly. But, the 5:00am showing of a show that was supposed to be on the History Channel didn't change channels at all. It didn't even look like it made an attempt to change channels (I'm not sure about that -- I didn't conciously look for the cable box banner change). So, this time, it looks like the TiVo turned "off" between 4:30am and 5:00am. Last time, I believe it was sometime around midnight. Also, the last time it happened, several shows recorded while the TiVo was "off." None of them attempted channel changes either. I never use Standby, so any problems that might be associated with it shouldn't apply here. The TiVo was operating normally (and recording) when I went to sleep last night. There's nothing in Recording History. This has only happened on the Sony SVR-2000. Both TiVos are on UPSs.