The comments feature doesn't appear to properly position the comments and form (at least with my theme). With FB comments OFF, my comments appear below my author bio box (right where my theme wants them). With Facebook plugin 1.0 and FB comments turned ON, they appear directly below the body of my post but above the author bio box, which is not where my theme calls for comments.
Worse, the theme's comment system then reports "no comments yet" where the comments are supposed to appear.
Theme is Canvas 5.0.1 from WooThemes.