Using passdb backend ldapsam and ldapsam:editposix, the creation of a user with net rpc user add fails with NT_STATUS_INVALID_PRIMARY_GROUP. Joining a WinXP box fails, too. Works with the same configuration and LDAP tree using Samba 3.0.28.
Created attachment 3181 [details] smb.conf
Created attachment 3182 [details] output of 'net rpc user add test -Uroot%geheim -d10'
Just tried with 8dd6458049d -- worked. Closing :-) Volker