I have had this problem for 3 months, and TiVo says they are aware of it, but doesn't know whats wrong. I have lifetime on 9 TiVos, and about twice a week on most of them I get T63, no TiVo service. When this happens, there are no TV listings, and no "to do" lists that are active. Meaning nothing will record unless I reboot. Please help TiVo.