Did you go by a different name before?

Weird... I'll take a look when I'm back at my machine.

I had some issues while archiving the group - some posts and comments don't have a from_name heading, and I'm not sure why. I got around this by telling the database to allow a NULL entry for the name. I have to look into which posts fall under that heading, and why.

Yes, there are a few people missing. I'm not quite sure why that is... Hmmm..... What are your Facebook privacy settings regarding posts?

Okay, so that's one theory shot down. :p

Oooh, wait! Look for a "Apps others use" section!

Under App settings.

That was suggested as a possible solution on stackoverflow.com, but I'm not entirely convinced that this is the issue here.