Well, you know, beta and everything, BUT... I'll just mention it all the same.
I'm writing from IE8 RC on WinXP Home 32, and have some problems with the navigation here. When I go into a sub-forum, I usually don't have the forum-index remaining in my history - I can't get back there by using Back, I have to click the link above the topic/forum title. It might be related, but when I click to go to page number x, the correct page-indicator lights up, but the actual topic-list doesn't get refreshed until a second or two later, and then rarely shows the page it's actually supposed to (i.e. stays on the same page).
It's quite possibly an IE8-bug - I don't remember having these problems with Firefox.
I can't seem to find a way to contact them. Anyway, if that's IE's problem, no need for the forum-workers to worry. But I'm so to speak not in the know. Right, I'll just go with IE7.
[UPDATE] Hm, I think I'll call it a forum-side bug anyway - the disappearing history persists in IE7. Not sure about the sub-forum page-navigation yet.