The numbering of posts in threads are incorrect

Also the numbering of posts does not seem to work in threads:
"First page of any thread, has the normal 30 post count. So far, so good.
On page two of a thread, the first post count jumps to 61.

This count does not show up on the forum page list, only inside every thread.
That's a weird one, to me...heh."

I'm 101% sure the easy fix is on the way.. ;)

I've come across a few MiniBB forums but haven't seen such bug like what you've described. Maybe a link to the specific threads would help Paul to identify the root causes?

I would like to see your forums live before calling it as a miniBB bug. It may be your upgrade issue as well...