I have a I mac and an airport. I've been having problems lately(one month) every time I try to connect to the net. it says there is no connection. if I refresh, it works. the reception icon was showing full (4 bars). 3 days ago, no reception, o bars, today, I got it back. i am about 50 feet away, around a corner outer house wall. nothing has changed in terms of new or moved electronic equipment. I even turned off my 5.0 ghz phone. any thought on how to fix this?