Xenforo is installed in http://www.urduweb.org/mehfil/ while the blog is in the root at http://www.urduweb.org
I did put in the salt in the plugin settings.
I have a strange problem with this add-on. After I installed it as plugin for my WordPress 3.3 install (in root folder), I or any of the xenforo install admins cannot get to the WP dashboard (/wp-admin/) at all. It gets redirected to the home page.