Last October I bought my first Mac, a Macbook Air 13". It works perfectly except for the wifi: I can be connected for hours without problems, but then it suddenly disconnects. The wifi widget doesn't change, and the way I solve it is disconnecting and reconnecting again.
I can't find the way to trigger this behaviour, which can happen after some minutes, or hours.
This doesn't happen with the other PCs that connect to the same wifi, nor with the iPhone.
I use WPA encryption; a friend of mine suggested using WEP to solve it, but I want to have a more secure network.
What could I do?
UPDATE:
I don't know if this can be important for the issue. I bought the MBA in USA (NewYork) and I live in Spain, Europe, could it be possible to have some slightly different technology/software interfering?
I have it updated to the last version
The exact model of the router is Huawei HG532c
UPDATE2:
Links that may help, seems like a is Lion issue
https://discussions.apple.com/thread/2664670?start=0&tstart=0
https://discussions.apple.com/message/16785261#16785261
Best Answer
I've had this experience with my wife's MBA and discovered our wifi channel was to close to other access points in the neighborhood. You would think this nearby interference would cause connection problems throughout the day but it actually occurred just like you've described. Ok for hours than down hard.
I changed the channel on our access point away from the nearby channels and the problem went away completely.
You can use an app like iStumbler to view available networks and what channels they are using. To view the wifi connection for your MBA, hold down the Option key and click on the wifi icon in the menu bar.