[wittmania]

I did run the conversion, but it didn’t work very well because I ended up with duplicate IDs, and therefore posts from phpbb were attributed to the wrong authors in cases where their IDs conflicted.

Now that you mention it, I wonder if the phpbb importer makes a change so that all new registrations would start at 999999999 just so there couldn’t possibly be any conflicts. I don’t know enough about mysql to know if that’s the case (or if it is, how to “fix” it), but if I were the one building the importer, I would probably add a feature like that, though I think a number around one billion might be a bit of overkill!