I'm on an O2 Payg Iphone in the UK and been using 2.2 since it came out, but this morning I've got the dreaded "Error sending message" when trying to text. I don't text that often, but it was working fine yesterday. The appstore did about 7 app updates this morning but it could be coincidence. Tried a reboot, deleted my previous conversations, but no luck. can't text anybody I've got enough credit and incoming messages and phonecalls out/in are fine Searching the net shows other people are starting to get this issue since going to 2.2