this started today. Today my sister and i (who have separate accounts and don't live near each other) have been having some interesting issues with iMessage in particular. -when sending messages i sometimes have to hit re-send 2-3 and sometimes more times before it goes through. (message send failure) -not getting delivery status updates. -when in chat with someone else, instead of just updating my chat with someone my phone notifies me i have a new message. i then have to back out to the text message list and re-click the person I'm already talking to before i can scroll down and see what the new message is. -inability to send picture,video messages. -sends iMessage as text message instead. in my sisters case, her phone won't connect to iCloud and update. her phone is going slow, dropping calls etc. resetting doesn't fix the problem. also, the people which I'm using iMessage are using iOS 5, are on at&t, have iMessage etc enabled.