After updating WPUF to 2.2.3 from 2.1.9 normal WordPress logout is not working. First the message “You are attempting to log out of [site name] Do you really want to log out?” shows. After pressing OK the browser gets stuck after a while and displays “Firefox has detected that the server is redirecting the request for this address in a way that will never complete”. This happens both when logged in as admin WordPress backend as well as when logged in to frontend. The frontend login is by means of the plugin Super Socializer which works great together with WPUF. Only logout gets messed up. When deactivating WPUF all works fine, and 2.1.9 also worked fine.
Thank you for your help. The login is in a menu on every page by means of WordPress Super Socializer plugin so your suggestion is not an alternative. Commenting out parts of WPUF file login.php fixes the issue, but perhaps you can make it an option to disable WPUF filtering of logout url?