The browser issue for this theme [tag]Sunrise[/tag] is now fixed, see this post here. If you are coming with IE7 it's working but of course not as nice as in FF, e.g. I couldn't control width of the box when you mouse over say "archives".
I'm now working on an extreme version as I was wondering how I could group menu items in the "topbar". That extreme menu version will have "no menu".