Logged users don't see any boards

[Carino]

Hello together,

If I register at joomla, the user will be registered at SMF, too.
But if I login, (Joomla frontend AND direct Board) there won't be displayed any boards! Only the statistic

You can test it on: http://www.lelafe.de [nofollow] (german)
Board is integrated and here http://www.lelafe.de/forum [nofollow]

If I put the normal user in a moderator group, I see only the secure boards (for moderators), but not more... Any ideas?

Info: There is a problem with all Joomla native users. I will see at the mysql, but I think, the reason is the failed syncronisation. http://www.simplemachines.org/community/index.php?topic=167618.0

Thanks a lot and sorry for my poor english