Settings saved but no facebook comment form is shown

Trying to set up facebook comments, but it refuses to work.
Using unmodified wordpress 3.2.1 with unmodified theme twentyeleven.

Tried removing all wpfb rows from the db.
Tried using a custom hook (comment_form for twentyeleven).
Tried redownloading the plugin.

On blog posts it loads facebook status and connects to, but still nothing seems to do it.