Yup apologies about that, gremlins always seem to appear over the weekend- people can thank Amazon for the PM that alerted the issue. But the server admin was contacted last night and they managed to sort it out, so let's hope it's a while before the next issue ;)
Thanks for the heads up, I will monitor the forums over the next few hours to see if the problem returns. The fact that you were able to post now is a good sign, but will continue to keep an eye on it to see if there are any other problems.
If anyone finds themselves locked out of the forums during any error events remember that you can tweet us or leave a comment on our facebook wall.