the cookie domain is the same for both.
excerpt from the confglobal.php of ipb2:
$INFO['cookie_domain'] = '.rpg.hu';
$INFO['cookie_id'] = 'rpg';
$INFO['cookie_path'] = '/';
copy from PP settings table:
171 PhotoPost Cookie Path cookie_path /
172 Forum Cookie Prefix cookieprefix rpg
173 PhotoPost Cookie .rpg.hu
is it possible to change the login method AFTER the installation?
maybe i'd try to install PP standalone with its own auth system and then use the ipb2 login system..