Comment 21 for bug 268663

The solution for this problem ( copied from https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=678834#20 ):

The filesystem permissions of a fully publicly shared directory (i.e. ~/Public) has to be drwxrwsrwx.

   chmod a+rwx ~/public
   chmod g+s ~/public

And /etc/samba/smb.conf has to contain the line

   inherit permissions = yes

in the [global] section.