Hi guys, Just bought a refurbished MBP 15" and I love it. However there seems to be a major problem with AirPort. When I'm in Windows 7, I get 6-7 megabits per second constantly. When I'm in Snow Leopard, I get between 0.5-2 max. Shifts constantly. Internet is very slow. So the issue is not with my router, it's with something in Snow Leopard... Can anyone help?