I have an iPad 2, running iOs5.0.1. From time to time since installing iOs5 Mail stops working. Running an Exchange server. I have tried stopping app, shutting down iPad, turning off networks and wifi and turning back on in all combinations but no joy. I tried deleting all mail accounts and re-entering but no joy. When in 3G mode it just says "connecting".... When in wifi it says "Checking for mail".... But does neither. If I leave it off for a while (hours) then turn back on it seems to start working again but will then stop again. ideas? help!