There have been numerous topics about why their wp-stats plugin is registering 0 hits regardless of the actual visitor count. The readme says to make sure <?php wp_footer() ?>' is present at the bottom of the theme -- it is, and so is<?php get_footer() ?>`.
I understand that a properly wired-up stats gatherer has some Javascript at the bottom. By viewing the blog's source, I see it's not present, even with both the footers above added. I've disabled, trashed, and reinstalled the wp-stats plug-in a zillion times in an effort to get the Javascript inserted into one of the pages. I don't know where the file referenced by wp_footer() lies, so I can't check the file's write permissions. (Wouldn't wp-stats spit out an error if it failed to write, though?)