These have now (I hope!) been fixed, with minimal or no loss of data.

Thanks to all that advised us of the problem initially.

Original message below....

The server tripped up last week (around the 7th/ 8th Jan) and the forum's haven't worked right since; we're looking into this and hope to have it resolved soon. Only items that appear to be affected (although we could be wrong) are the actual posting of topics- reading does not appear to be affected..... We will advise when back up again. Andy