Just picked up a Tivo Mini over the weekend and all is working well so far. First off, Im getting some conflicting information as to the sleep mode. Ive heard the unit goes to sleep somewhere between 10 minutes and 4 hours of non use. Im trying to better understand the behavior I can expect. How does the Unit know when the TV is turned off? Secondly, if I walk away from the TiVo Mini while watching a live and turn the TV off, what will happen to the borrowed tuner on the Host DVR? If it needs the Tuner to record something, will it use it? Thanks for your help.