Dear All: Samba will assign uid according to the range of idmap uid destined in smb.conf when join domain. The question is: Does samba force to reassign the uid each time joining domain? For example: idmap uid =10000-50000 Join first time, the domain users uid will start from 10000 according to alphabetical order. Join the same domain second time, the domain users uid will still start from 10000 according to alphabetical order. What if after joining domain, some user deleted and thus the alphabetical order is not the same as first join? The users after the deleted user will shift up by 1 when joining the second time. Is there anyway to work around the problem? Thanks for your reply. Latrell.