For the past three years my site had been using WebBBS as its discussion forum software. From version 4 onwards the scripts have become a nightmare and seem totally unstable and incapable of coping with a large number of messages.
After a bit of digging around I found WWWThreads which is wonderful! With a true database back-end, cross-forum searches, user settings and more it is so much more powerful, a lot faster and more user friedly.
I'm now a loyal fan of it and with my discussion forums being converted to it tomorrow I guess I'll find out if they think the same!