[chrishajer]

WordPress 2.6 does not integrate with 0.9.0.3.

https://bbpress.org/forums/topic/wordpress-and-bbpress-integration-101

Do NOT try to integrate WordPress 2.6 with bbPress 0.9 – only use WP 2.5.1 – the reason for this is simple – WordPress has radically changed the way cookies are used.