You are right. There is a big problem with viewing your site in IE-8 . I can't see the blocks and I can only see the first section on the home page. You should report this in the Development Tracker.
I have to use IE because we have IE embedded in our desktop application and it opens the Moodle site. However I don't have any problems seeing my whole site in both IE and FireFox. I have also tested it in Chorme, Safari, and Opera with no problems. I am using a modified version of the Fusion Theme.
The only problem I currently have with IE is that the Spell Checker in the HTML editor will not open in IE. And if you type some text then try to run the spell checker, the text will not save. I have reported this in Tracker at MDL-24795 but so far, there has been no response from the development team.