This is strange, I managed to be able to access the ATDB all afternoon yesterday and evening (I keep a tab open and refresh every so often), there were some periods of time, normally when it is the peak of the day that no one was listed online!!! Yet it seemed that everything was working fine, just no people online and no posts. I haven't had speed problems yesterday (although I have done so a few days ago), or fail to load pages, and I hadn't noticed any 'existing' threads go missing.
That is until this morning, it appears apparent that some of the above posts from yesterday which were posted did not appear nor did the members who were posting them! (excluding those who have their online status hidden)
I had also noticed my latest mod to my signature has reverted back to the one from about two days ago.