I have tried to connect to xbox live. I have an ethernet cable which plugs directly into the wall of my apartment. The error message tells me to chane the MTU settings, but it is not possible for me as I dont have a router of any sort. What I suspect is the problem is that the internet in my apartment complex is set up in such a way that every two hours you have to press a "continue" button to access the internet. This is a fair usage policy which blocks all internet connection for someone every two hours until they press the contiue button. On computers this no problem as each new laptop connected to the wall just presses continue, but for the xbox there is no way to do this.
Anybody know a way around this?