IPhone with iOS 6.x crashes home wifi

Question

Hello,
My wife and I upgraded our iPhone 4ses to iOS 6 in December. Since then, our phones have not played well with our wifi network, whereas before it--and they--were completely stable.
The router is a Linksys E3200. The phones of course are on the 2.4Ghz network. The issue is that when we sign onto wifi with either of our iPhones, one of two things happens:
1) Wifi crashes right away; the network is still visible and broadcasting an SSID, but not transmitting any data.
2) Wifi works fine (using Airplay, etc., with the phones), but then crashes the NEXT time we try to sign onto wifi with the phones, in the same way as described in point (1).
The router's firmware is completely up to date. Updating iOS to 6.1 has not solved the issue. Various other suggestions laid out elsewhere in these forums for similar issues--for instance, resetting network settings, changing the proxy setting to auto, and so on--have not helped. Meanwhile, every other device in our house, including the latest AppleTV, a 2009 Macbook, an XBox 360 and an HP Windows laptop, can get on the network without creating any problems.
Meanwhile, my iPhone seems to work without any problems on my office network. This leads me to believe that something in iOS 6 is not playing well with my router settings here at home. I'd love any insight or solutions.
Help!

Answer 1

I have tried everything short of deleting the app and re-installing it
What have you tried already? It would be of no use to suggest anything that you already tried.
Usually resetting GarageBand in the Settings.app will reset it, so that it does not open the most recent song on start up.
But if the problem is not the last song, but a problem downloading from iCloud, you could try to lauch GarageBand with the Wifi turned off. If you get GB to launch this way, you can try to share all your projects to iTunes and to sync them to your computer. After you have saved them to your Computer, you can reinstall GarageBand.
Regards
Léonie