if have tried to diskuss these problem in the German forum but no look, so i will try it here.
My Testserver runs on 2.3 with the not working guest access ok it was a bug.
Then i read the post the rc1 is out so i did a update from 2.3 to 3.0rc1, the update crashes with update on samba 4 and i was not able to fix this problem via webgui, a purge at ssh and a new install zentyal samba install without any problem.
So then i test it with a guest share with no look
OK downloading the new 3.0rc1 iso, installing it installing samba comes with an error
OK from the beginning samba install ohhh without any error
Then ad a share with guest access annnnnndddd nothing the share is shown but no access without any password
SO GUYS please explain me how guest is working (it should working see post from track)