It's not as easy as it looks

When I first thought about extending the menu bar on the right to the bottom of the page, I thought it was a piece of cake. However, I've only managed to come close to that in 2.5 hours of experimenting and browsing. The menu bar don't continue to the end of the page, but stops just before the last post on the page. Apparently, based on browsing several css forums, this is become quite a problem, especially for browser other than IE. Well I don't really care about it now, since it was close enough to what I want. Maybe if I have some spare time I'll look into it a bit more, but right now, I need some sleep, laters..