Isn't it redundant to have *both* a Limit and LimitExcept if all you're trying to do is limit HTTP methods for everything on a given httpd to only GET POST HEAD?
<Directory /> Options FollowSymLinks AllowOverride None <Limit GET POST HEAD> Order allow,deny Allow from all </Limit> <LimitExcept GET POST HEAD> Order Deny,Allow Deny from all </LimitExcept> </Directory>