Same problem of the second example of bug:2509 that is marked as fixed. I'm using Samba 3.0.21b ,usrmgr.exe on a win 2k pro ,smbldaptools ,using "enable privileges" and have the same errors on logs (smbldap_open: cannot access LDAP when not root) trying to add an user to a group using usmgr . See bug 2509 for more info .
sorry,I've submitted the same bug 2 times.