I noticed that if i set the redirecting URL of "All other users" to my Base URL for example http://my-wordpress-blog.com/ i cant login after my last logout. This comes cause wordpress redirects you after login no longer to /wp-admin but to your blog base url.
To fix that navigate to your phpmyadmin page and select the table wp_login_redirects. Now you can set the redirecting url for "all" to your default e.g http://my-wordpress-blog.com/wp-admin/