i'm a new roamio plus user who purchased last Saturday. I also had wifi issues and inconsistent c133 errors associated with not a stable connection. I ended up switching to Ethernet cable to avoid using wifi. I do not have a green router or have I had connection problems with my dlink 655 router at any time in the past. however, during my investigation of the problem using wifi I did find a curious fact which TiVo margaret may find interesting: in my router log and on a status page of connected wireless users I had not 1, but 3 mac addresses associated with my TiVo connected to my router. one of course was the designed mac address as noted on the TiVo screen, but in addition there were 2 other mac addresses all different. the 3 mac addresses all had the first 7 digits the same, but the remainder were different. also, one of the ip addresses associated with one of the connections was assigned 0.0.0.0 which I've never seen before in all my years. in conclusion, TiVo is using 3 distinct mac addresses attempting to connect to my wifi. this could be cause of problems no doubt. if TiVo Margaret is interested I have a printed copy of the wireless status page.