[@sambauers Participant 17 years, 10 months ago]

Without core hacks or writing your own plugin that hooks into the get_forum_link function and the bb_repermalink function it’s not possible. Your .htaccess file may be correct, but the links generated on the forum won’t work without changing the what those functions expect. I suggest you change the name of the subdirectory you are placing your forums in – that would be the path of least resistance..