I just followed this guide to setup a Samba PDC for freebsd:
http://daniel.fiser.cz/?go=samba
I can join domain and login via windows XP. The only problem is that when I login with Windows XP, I get an error message saying that it can't create/retreive a profile from the PDC. So basicly nothing will get saved on my server. I set permissions this way and that and I am all out of ideas. Does anyone know how to fix this?