Quick fix until I update the zip tomorrow night with a blacklist:
In your 'Process incoming linkbacks' plugin find:
PHP Code:
if(substr_count($ref, $vbulletin->options['bburl']) == 0 && verify_link($ref))
Replace with:
PHP Code:
if(substr_count($ref, $vbulletin->options['bburl']) == 0 && substr_count($ref, $vbulletin->options['homeurl']) == 0 && verify_link($ref))