We had some urgent development work that needed to be done on the site today. Initially we didn't think that the forums would be involved but we had to freeze the main site and everything else at around 9am GMT. Once the work started we couldn't stop in order to post a message here.
We're now back and the site should be functioning as before. If there are any glitches or errors please use the red 'feedback' tab that's in the bottom left hand side of the page.
Thanks for your patience,