Incorrectly sorting FB comments

http://baladeyat.net/%D8%A7%D9%84%D8%AA%D8%AF%D8%AE%D9%8A%D9%86/#comment-37
It seems that comments are not sorted properly.
(you can also note that last comments are not present in wb-comments, they were deleted, I am not sure if this cause incorrect sorting).

http://wordpress.org/extend/plugins/seo-facebook-comments/