I use it all the time, but sometimes when I am looking for something specific to check and go to a forum I have noticed that some new threads are not showing in my view. I know that quite a few get missed and also after EST midnight everything comes up again even though I have read it.
+1 That's +1 to you being some kind of freak, like everyone else here I use the show new posts option, in fact it is up there on my tool bar so I can get to it from any webpage