Yeah, honestly, I've been a bit worried about the way it displays the posts, because it makes people inclined not to notice anything other than the last ten posts, and when the last ten posts are all in one thread that's not good.
We do actually have a "go to unread posts" thing (if a thread has unread posts it displays a "new" icon next to it) and we also do have a "show unread posts since last visit" thing at the top (which is genuinely necessary). I do find the thing at the bottom convinient, but I am inclined to agree that it makes people likely to focus on those posts to the exclusion of others.