[Ipstenu (Mika Epstein)]

Double check your AUTH/Secure etc keys in each config file to make sure they’re exactly the same.

In fact, copy the ones from WP into BB and manually add in the ‘BB_’ in the name.

Also, in wp-config you should have

// Cookies

define('COOKIE_DOMAIN', '.mysite.com');

define('COOKIEPATH', '/' );

But in bb-config it’s part of the WP cookie speed up so:

$bb->cookiedomain = '.mysite.com';

$bb->cookiepath = '/';