I had this problem crop up this week. My TiVo didn't record anything for about 24 hours, when I rebooted it. Everything seems to be fine for now. But....I lost "Lost" this week. My internet is down too so I can't even watch it at abc.com! Everything is breaking all at once! I have a single tuner standalone TiVo branded unit. Been working flawlessly since I got it 11/2003. I finally upgraded the HD sometime last year. I also use analog cable with no box, and put the unit on standby when not using it.