Hi, I have just installed Ubuntu 7.10 server (64 bit version) and I have installed OpenLDAP and Samba in order to make a good PDC server by LDAP authentication. I have installed all the software and libraries needed according to the http://www.howtoforge.com/openldap-samba-domain-controller-ubuntu7.10-p2 howto and this is the problem that I have: all seems to go right but, when I reboot the system after the procedure to tell the server to use LDAP as one of the options to authenticate users, I am unable to login and the system don't accept any command. The only way to restore the system is to boot from a live cd and restore the pam.d directory and the nsswitch.conf file as the original. When I try to check if the server is alive (ping IP address) and login using a pc client I have this situation: - ping OK - ssh (doesn't answer) - webmin (doesn't answer) I make the entire installation procedure two times but I have the same result I suspect that some library is corrupted (I am sure that the howto works fine) I hope someone can help me !!!