Based on what I experienced last night during the C133 issues, the Roamio has real problems when the TiVo Core Services are down. I was able to watch live TV and recording but pressing the TiVo button made the screen go black and unresponsive for about 20 seconds. Other weird things happened too. Others have commented on this as well if you search a bit. I think part of the problem was the Roamio had a network connection so it was trying to communicate but not receiving a response from TiVo and freezing until a timeout occurred. It was recording the whole time, though. I have kept a regular cable box as a backup so we can still watch live TV because I don't trust that my TiVo will always be working. When it works it is great but it is too dependent on the mothership for every little function.