it's rumored microsoft is going to release internet explorer 8 in a few days and i'm running ie8 rc1 at the moment and everything on geekzone displays correctly, except geekzone freezes when i open 5 or more forum topics and scroll up and down on them.
however the problem is fixed when i click on the ie8 compatibility view feature which displays the website as if ie7 would display it.
the following website will tell you what ie8 is and how to make your geekzone website fully compatible with it:
http://blogs.msdn.com/ie/archive/2008/08/27/introducing-compatibility-view.aspx