Due to the previous server host putting prices up 25%, and with the drop on the £/$, the cost of the server went up 40%. This meant having to move to a new one, which was done yesterday. Although it went well, for some the new IP took a while to propagate to their ISP, so the site may have been closed for new posts for a good few hours. For others, it was only an hour.
If anything is not working, please let us know.