Problems with integrating Phpbb3 - Joomla! Forum - community, help and support

i have site: http://www.scoutmedicine.org, joomla-site.
in there, have installed phpbb3 in http://www.scoutmedicine.org/forum , bridged jfusion.

when click on link on joomla-page, joomlamenu , heading visible - want be.
(http://www.scoutmedicine.org/index.php? ... &itemid=53)

when log in, shows standard message "you have logged in" link beneath :http://www.scoutmedicine.org/forum/%5c/index.php?sid=414f11f910ad70985ae592acc2f9cd37
if wait few sec or click on link, joomla-heading disappear.

if logged in forum, no problem...

how can change that?

i think easiest way it, change it, users automatically logging intothe forum when log joomla. have done in backend, doesnt seems happend..