Our Tivo box is fully re-booting when we press the TV Guide button on the remote control.
This is a new box that we've only had for about 3 weeks, as our last one started doing the same thing.
When we first reported this to Virgin I was told to alter a few settings, but the same thing happened within an hour of coming off the phone, so when I rang back I spoke to someome who actually new what she was talking about (UK call center this time) and said that theres a number of Tivo box's in circulation that were indeed doing what had been happening to ours, hence her then arranging to send a new box, but now the new one is doing the same thing !!!