bbPress.org

Read Only Forums has not been tested or fixed to work on bbPress 1.0 which is why you are probably having problems. If any of my plugins work on 1.0 it’s mostly luck at this point.

As far as hosting, I wrote this little bit last year:

http://ckon.wordpress.com/2008/12/18/some-tech-tips-to-find-a-better-wordpress-or-bbpress-host/