I've read somewhere (Samba Guide and/or HOWTO) that there can be only one PDC for a domain. What happens if I have more than one PDC (they all will use a master LDAP server + LDAP slave per each PDC)? I did some basic testing, and nothing wrong seemed to happen when I set up more PDC servers (instead of one PDC + many BDCs) - and it has some advantages when there are network problems (my domain controllers and clients are separated by WAN/VPN). -- Tomek