A few weeks ago i wrote into support for the ultimate facebook comment importing issue. You ended up joining the discussion and helped me solve the problem with the ultimate facebook version 2.6.5 beta... That beta version worked perfectly, or at least all parts of the plugin were working including the comment importing...
Once the new 2.6.5 version was released last week, the comment importing stopped working as soon as i upgraded my version. I have still yet to import any new comments.
I just deleted the newest version of your 2.6.5 and reinstalled the beta version of 2.6.5. I activated it and right away it began importing comments again.
Is it possible the new version does not have the fix for the comment importing.
Looking forward to hearing your thoughts, thanks.