I upgraded one of my sites from PHP-Nuke to PostNuke this evening. Boy, do I have a lot of bug fixes to submit. All of my old URLs broke; they're now hundreds of characters long. It ignored my old design and put on this nasty beige thing. User registration sucks just as much as ever. I'm baffled as to how to set the items that appear on the main menu. There are errors ("Block Type userbox Not Found") that mystify me; why would there be errors on a stock install? Moderation reasons don't appear: it just says "Score: 3" without any "Insightful" or anything. The whole system is really very confusing.That said, I'm very happy with it. It's a fine project that is developing nicely. I've tracked it since day 1, and I have high hopes. But it's sure got a long way to go between v 0.714 and v1.0 if it's to be any good.
Note to PostNuke team: if you want an excellent, excellent program on which to model things, check out Gallery.