Since downloading ios5, my son and I have had issues with data from time to time. Even on wifi, safari will give us the server error. When this happens we also stop getting mms messeges and push mail. The only fix is to reset network connections. I have tried to reset as a new phone but still get the error. It seems to happen when I switch from one wifi network to another. Anyone seen this? It is really annoying having to reset these phones. Never had this issue until we updated to ios5.