I have the newest revision of the MB 2.16 Ghz C2D. At my campus, the whole academic area has wireless but I am having issues with it. Sometimes I have to go to internet connect to connect to it, and sometimes it does it automatically. But about half the time, it disconnects after a short period of use. When I look at it in Internet Connect, it says it is "authenticating" in the status area. Sometimes it doesnt even get connected before it goes to the "authenticating" thing. What does this mean? Can I fix this or is my airport card a lemon?