I have recently updated to 7.5.2 on my extreme and express networks. The speakers connected to my airport express seem to be intermittently dropping connection. This has not happened before. I downgraded both extreme and express to their previous 7.4.2 thinking that was the problem. However the problem has continued. The airport express is only a few metres from my g5 imac so it is not a reception problem. I was wondering if it could be a malfunction of the express unit itself. It does get pretty warm, not too hot to touch or anything like that, but fairly warm nevertheless. The ambient temperature in the room is about 80ºF. If I start a song in itunes it plays for a few seconds then cuts out, it's stays out for a minute and then might attempt to come on again. However if I start the song from the beginning after it cuts out it seems to always start OK for a few seconds. does this sound like a hardware problem and it is possible to perform a diagnostic test to confirm this?