I got a new MBP about 6 weeks ago. I had an older MBP which I bought two years ago and I never had wi-fi problems. However, the new MBP has given me a constant stream of wi-fi problems. Problem #1 - When I move my MBP at home more than 20 feet away from my AEBS it drops the signal altogether. Even when I'm within 20 feet I have to set the network to N-only which means I can't access the wireless using my iPhone. Problem #2 - I often connect in Starbucks using T-Mobile. My old MBP never had any issues. However, about 2/3 of the time that I try to connect with the new MBP I have issues. It usually connects at first but then drops the signal after a bit and I can't always reconnect. I'm at the point where I'm ready to take the computer back and swap it out for a new one. All the software is up-to-date (running 10.5.6) so I'm not sure what else I can do at this point. This is my last gasp effort before I go through the hassle of trying to get a new machine. Any suggestions for things I can try?