Well playing around, firefox does work. But, it is not exactly working the way it should. If you click on a multipage thread it will go to the first page first entry, then it will load the correct page and jump to the right post. It really should not load the first page at all. I suspect that IE is just not doing the redirect to the correct page/post after loading the first page/post.
But, FF is 100% better than IE because it will get to the correct post after a quick double load. So, I will use FF on the site until the issue is resolved (and before the obvious question is asked, I have to use sites that only work with IE (they refuse to even load if the browser says it is not IE)).