Your product looks really good, but unfortunately, I don't have any more time to waste trying to figure out why I keep getting the Bad Referer error. You guys need to have a customer oriented attitude and not be telling people to leave their firewalls open so they can administer their PunBB forum. Come on, nobody else does that.
I'll keep checking back to see if you fix this thing, because I think it could potentially be better than phpBB. But for now, I'm dumping punBB.