One of the users of our drupal site (www.tripolimn.org) is complaining that he can't connect to the site.  Everytime he does, he gets a 404.  No one else sees this problem.

 

He recently found that if he deletes his cookies, he can access the site, for one page only.  After that, he has to clean his cookies again.  He is also having this problem on multiple PCs.

 

I'm at a loss.  Anyone have any ideas?