I'm having a rather bizarre issue with this theme. I guess it's related to the fixed width issue but am not sure.
The menu bar appears on the left side of the screen (only the menu bar) and then to the right of the menu bar the 'normal' contents of my front page (Main Menu, Courses, and Site Admin blocks). Then further right the center block and finally to the right of that the blocks I have on the right side (calendar etc.).
There is a colored portion in the center of the screen that I think is supposed to house everything but the content is all over the place.
I'm using Firefox 3.6.3 on a Mac in a XAMPP experimental package.