MacBook Air WiFi Network Problems

I've already gone through that article, Linc. But thanks anyway.

One of the first things it says is that, "Usually, if other computers or devices (such as the Apple TV or iPhone) are able to get on the Internet without issues, then your Wi-Fi router is probably fine."

In spite of the fact that three iPads, two iPhones and an iPod Touch (not to mention several PC computers with WiFi) work perfectly, I've gone through the entire trouble-shooting steps. No luck.

Leaving aside the brand new MacBook Air for the moment, what could possibly have changed in iOS 6.x over 5.x to cause WiFi instability issues on the same networks? Whatever it is, also affects the brand new MB Air as well.

No, I'm not running 5 GHz. And I have tried changing the channel on my router, although I didn't think it would make a difference as it's not an interferrence issue... (as far as I can determine) because from the same location with the same gadgets running, iOS 5.x devices work perfectly and 6.x devices don't. Including the new MB Air. And at my home network there are no other WiFi devices anywhere (heck, I can barely even see my neighbors homes from here!).

I repeat, simply changing from iOS 5.x on my Touch to 6.0.1 caused the WiFi connection to become regularly disconnected. iPad Mini's (two of them of course with iOS 6.x) had the same problem. Now the new MB Air also has the problem. Older iOS devices with iOS 5.x work PERFECTLY. Every setting has been set, reset, checked, etc. Obviously some setting in my WiFi router isn't compatible with newer iOS 6.x devices or the new MB Air, and I have no idea what it could be.

I'm real frustrated, and have no idea where to look for help. As near as I can figure out, those newer Apple devices don't like WiFi networks with fixed IP (no DHCP server) addresses.

What setting(s) could possibly allow for initial connection but then drop the connection 5 minutes or 50mb later? Only way to get it reconnected then is to turn off WiFi and turn it back on again. That was the only way I was able to download software to my new MB Air. Keep watching the d/l progress, and when it stalls and before it can abort, turn off the WiFi and turn it back on, resume the d/l. Frustrating!

Thank you for trying to help.

My WiFi routers don't support it.

Besides, why should my new MB Air NOT work on my network when several iPads and iPhones, etc. DO? They're not running 5 GHz either.

What makes you think I'm asking YOU to do anything??? I'm asking for help from the community, and if you don't feel like trying to help, don't be a p____k about it. Just don't help.

Obviously I don't know anywhere near enough to solve this on my own, and I was hoping to at least get some pointers here about where to look for help. My WiFi routers are less than a year old, still current models from Cisco, and they work perfectly with my other (including Apple) WiFi products. Something's changed with the newest MacBook Air and iOS 6.x devices which has obviously turned up some kind of error/mis-configuration in my WiFi routers, and as far as I can see, if the same Apple devices running iOS 5.x work perfectly here, upgrading them to iOS 6.x should still allow them to work. My own network is one thing, but geez, if you travel you end up in hotels where you run into the same problems... you can't go around telling them all that their equipement is obsolete. Especially if iOS 5.x gadgets work perfectly and iOS 6.x don't.

I hope someone else might be able to give at least a little guidance here.

Happy Holidays to you.