If you load a thread-page and write a reply, then click on post you will see any new posts between loading the page and writing your reply... on the old forum.

Now on the new forum you won't see any posts which were posted in between loading and posting your post. This is a problem esp. if you write a longer reply.

It would be nice if the browser would check for any posts which were posted in between so that they can be displayed as well.

Sorry for the bad description... I hope it is clear what I mean.