Alright...my girlfriend dropped my macbook from about 2 feet. it didnt seem like a bad drop and it worked just fine when i turned it back on, but after using it for about 3 or 4 hours later the Airport started messing up. It would intermittently drop the connection and immediately reconnect. i ran the network diagnostics and the bullet on the left named "Airport Settings" flashes "Failed." after continuing through the diagnostic, when i get to the question about about DHCP or PPPoE a box pops up and says "Network Change Detected." It always works right after i run the diagnostics but does the same thing just a few seconds later. Ive tried restarting and ive checked to make sure all my software and firmware were up to date but i istill havent made any headway. Please help!!