Atahualpa and WPMU

We are using this great theme for a number of blogs using an install of Wordpress Multi User.
However uploaded images do not display.

The image uploads are stored in this directory
/home/wpmu/wordpress/wp-content/blogs.dir/3/files/2010/03/image.jpg

and then this directory for another blog
/home/wpmu/wordpress/wp-content/blogs.dir/4/files/2010/03/

and this directory for another blog
/home/wpmu/wordpress/wp-content/blogs.dir/5/files/2010/03/

and so on

the url for the image that does not display for example from blog "3" is

http://domain.org/files/2010/03/image.jpg

is there something in the theme somewhere that might cause this error because I am using wpmu (word press multi user) not just a single user?