coming soon
REMEMBER: you must set the path and domain of your cookies to be inclusive in both WP and bbPress (ie. root / ) ie. If WordPress is under "/blog/" and bbPress is under "/forums/" the default cookie paths will not work for you. However if bbPress is "underneath" WordPress, you may not have to adjust anything. See my general integration guide here: http://bbpress.org/forums/topic/wordpress-and-bbpress-integration-101
Alternately you can try this other method of downgrading the cookies in WordPress 2.7 to the old 2.5 method which will work with bbPress 0.9 (and might work with deep integration) http://superann.com/2009/02/26/wordpress-26-27-bbpress-09-cookie-integration-plugin/