Facebook plugin is violating WordPress programming conventions - it overrides WP's no comments allowed settings. When I have no comments allowed on my site it adds a "Leave a Reply" box at the bottom of a static front page even though I have followed all of the settings to not allow comments. The Facebook reply boxes appear as wanted on every other page, however when I disable all of my plugins, and then activate just the Facebook plugin it adds the "Leave a Reply" box at the bottom of the home page.
It is not a problem with the theme - I get the same results with every theme I use - the problem is with the plugin itself.
Instead of using this plugin, I installed the "Facebook All" plugin, and it does not break or override the WP no comment policy.
I think it is a shame that the Official Facebook plugin does not work properly, and others do.
I posted this earlier and someone marked it solved, when it in fact wasn't solved, so I am reposting it here. This is a link to the original bug report: