Thanks for your help on deleting the 1000 users. Now I have a problem adding Windows XP to my Samba 3.0.4 domain that I use in my production network. I can add W2K machines all day long with no problems. My XP machine has the XP registry patch turning off the requirestrongkey=0 and requiresignorseal=0. What is really weird is I can add this XP machine to my imaging server which is Samba 3.0.4 Pdc which is in a different domain and the XP computer adds to the domain with no problems. Everything works fine. I was wondering is there utility to check tdb dabases make sure they are consistent or utility to check the smbpasswd file like pwck for passwd?