You can install Kunena right now, but our stable is almost ready. I would expect final release in two days, maybe tomorrow if we get enough time to prepare the release.
Kunena uses Fb tables, so you should uninstall FB and all third party components hooked to it. Then just install Kunena (and extra components for it) and change the menu item. That's all.
Kunena does not contain any improvements for spam problem, mostly because of it just gives a link which points to Joomla user component. Look at Joomla Extensions Directory for solution to your problem. If you want to change the link to point your own form, I can help you with that. But I would try to find a better registration form.
Kunena has many improvements from Fireboard, mostly because it was first intended to be FB 1.0.5. We will publish release notes together with Kunena, so that you can your own conclusions whether to migrate or not.
I must say that it was with some relief that I was introduced to kunena on the joomla forum while trying to fix a Fireboard problem. (Thanks frboulli and johnnydement)
I now plan to migrate my board to kunena but wonder if I should wait until a final release? Would it be feasable to install kunena and hook it up to the database to test it? I guess I could copy the database contents to a new database and play with it?
There is very little traffic on the board at the moment, partly because of the season (it deals with livestock), and to some extent, because the users of the original Phorum board did not like the change to fireboard. Hopefully, with this change, they will only notice the improvement!
One big problem for me with fireboard was the number of spam registrations it attracted. 2 arrived within 20 minutes of going live. Then I was deleting 30 a day, with only 2-3 real registrations happening a week. I turned off auto registration and made my own form, registering new users manually.
The old register link remains and gives an error message and I cant find a way to either remove it, change the message or redirect the link to my new registration form. So if anyone can help with the above fireboard problem, that would help until I go live with kunena.
Also, has the spam registration thing improved with kunena?