I played flawlessly for 6 years using U-verse/DSL at my old house. I moved into my new house with Comcast internet and now I randomly get booted off with a message like "you need to log into xbox live" I will run a test on my connection and it always passes, but when I try to reconnect to live, it will throw out code 80072EF3 or 8015190E. I am hard wired, I have tried everything I can find regarding both codes and any tricks I could dig off the internet. Sometimes I can play for 2 hours, sometimes I cannot get on at all. At speedtest.net, I have a download speed of 58.14, upload of 6.13, and a 10 ms ping. I have also tried unplugging everything that uses internet from my modem with no luck. When I do get to play, my connection feels fine. Any idea's? Thanks.