Facebook comments box position

Hi,

I am using Facebook official plugin.
In this page: http://roxanajones.com/2012/01/31/inspirational-quote-darkness/ I want to display the Facebook Comment Box below the Related Posts.

If I enable automatic placement for Related Posts then the Related Posts section goes below the Facebook box.
If I do a manual placement in single.php or loop-single.php of my theme I end up with the same result.

Any idea how to solve this?