[Plugin: SEO Facebook Comment] Duplicate comments

Hi, just wondered if anyone could help, when someone adds a comment using the seo facebook comment box it duplicates it within the normal comments for the site. I want to keep the standard comment box for people that dont use facebook so I dont want to hide this box. Is there anyway to stop the seo facebook comment plugin to not duplicate the comments?

http://ww.wp.xz.cn/extend/plugins/seo-facebook-comments/