I first noticed this a week or so ago. My Series 3 (with two cable cards) started getting extremely sluggish. Any kind of remote action, moving between menus, building lists, fast-forward/rewind, etc. was not responding like it should. Then after a while the controls on the remote will stop working all together and the TiVo will reboot. It did this tonight during Lost and that was the last straw. Also sometimes I will turn on my TV and the screen will be black and then, after a few minutes, the TiVo reboots. I noticed other people in the forum were having issues with video freeze, claiming it was due to a recent update. I'm not sure if my problem is related or not because I haven't seen others mention auto restarts. Is anyone else having issues like this? After having numerous cable card issues in the initial setup, my Series 3 has been working great for more than a year now until this started recently.