Hi everybody, hope you're all well - I got my new MacBook Air today (Rev B, 1.6 GHz, HDD version) and need your help. I would be happy, if there wasn't a huge problem: After a few minutes, the Airport of the MBA always deactivates. Not only in the sense that I have to connect to the Internet again - the Airport is shown as deactivated/off and can't even be turned on. The Airport symbol in the menu bar gets totally blank inside. If I press "activate" in the menu bar or system preferences nothing happens. Only a reboot solves the problem - for a few minutes until it happens again. I've already searched the net and found out that quite a lot of people have this problem - not only on their Airs, but also on normal MacBook (Pros). Can this be caused by the heat or do you think it is a software problem? I now have to find out what to do: I almost believe this is one of those tricky hardware problems I hate - not a clear defective for warranty and not 100% reproducible - I should think about sending it back quickly in the 14 days I'm (hopefully!) able to do this without problems. Hardware or Mac OSX Software problem - if I'm not able fix this, I really have to give this baby back cause I can't work this way. To complete the information: I use the Time Capsule as a router on 5 GHz. I don't know if the frequency is relevant, but I don't want to change back to 2,4 GHz if the MacBook Air really can't handle this. But, as described before: It not only loses the Internet connection, it loses the whole Airport until reboot! (I have quite the same problem with Bluetooh on my iMac, by the way, but much more rarer ... I HATE those kind of problems! You are almost doomed - after frustrating trying and trying - not to find out the reason ...) Any help is highly appreciated. Thanks a million in advance!!! Have a nice weekend!