I noticed the 2 following bugs:
Bug #1 - I tried to open sevral times that thread around 08:45 GMT but it failed & I had the following error printed on page:

Fatal error: Maximum execution time of 30 seconds exceeded in /data/httpd1/htdocs/admin/functions.php on line 1150



Bug #2 - Yesterday I tried to delete a thread I started but It failed (and took ages to fail), presumably (In my opinion) because in the mean time MsMittens was replying a post.

The site could be enhanced with a message, alerting the thread owner, that deletion is impossible because x ppl are reading or replying. And when all quit the thread close it, send a PM to the owner alrting the thread is closed and deletion is now achievable....
It's just an idea...