In the past I sometimes missed a post because a new one was posted while I was reading one from another page.
Let me explain:
Suppose you are reading the posts on page 2 like this:
When a new post is created by somebody while you have page 2 open, and then you go to page 1, the post (post #10) that was on the bottom of page 1 before the new message was posted, is moved to the top of page 2 when you switch to page 1 (and it becomes post #11).
So in that case you will never see that specific post.
On the former forum I learned to keep an eye on the total amount of posts (that I believe was somewhere in view on the top), so when that number increased when switching to another page, I knew I had to go back to the former page to check for a post that I might miss otherwise.
For this reason, could we have the 'total post' count somewhere in sight at the top of the page?
(as I created in the mock-up)