I recently added a do follow plugin to my site and it worked just fine with 2.3, but today I've upgraded to 2.3.1 and absolutely NOTHING is working to keep a comment author's name linked to their URL. I've tried going in and editing the comment to include the URL, but it won't take. I've tried various other do-follow plugins, they don't help. I've deactivated and removed my other plugins. I've changed the code in my comment-template.php page, no go.
Can anyone help, please?