Michael,
I'm not seeing that error right now. Usually, that occurs when you have a brand new Facebook application and Facebook hasn't scanned any of your pages yet. This happens when you first add the comment box to some pages on your site, but usually clears itself up in a few hours. Then, after Facebook has seen a few pages, future pages will automatically be marked as 'ok' in their eyes.
If you're still seeing the issue, definitely let us know, but hopefully it's all fixed on it's own now.
Thanks,
Alex