Isnard, I think I have a problem with samba / winbind. I tried squid using the squid_unix_group with the machine I´ve configured with Kerberos and it worked. Now I configured samba on a testmachine that was unconfigured before and tried wbinfo -g and I become error messages. So I think, that squid and squid_unix_group had no problem yesterday, but Samba didn´t worked well. I now try to get Samba working without Kerberos (I think it worked yesterday after I configured Kerberos). Regards, Ralf