Hi List, Last week i have upgrate my samba from 3.023d to 3.0.28 and now i have some trouble in my LOGs like this: Dec 31 08:59:23 ldapmaster smbd[10453]: pdb_increment_bad_password_count: pdb_get_account_policy failed. Dec 31 08:59:39 ldapmaster smbd[12758]: [2007/12/31 08:59:39, 0, effective(0, 0), real(0, 0)] passdb/pdb_get_set.c:pdb_get_group_sid(211) Dec 31 08:59:39 ldapmaster smbd[12758]: pdb_get_group_sid: Failed to find Unix account for pcoc081$ Dec 31 09:02:53 ldapmaster smbd[12836]: [2007/12/31 09:02:53, 0, effective(0, 0), real(0, 0)] passdb/pdb_get_set.c:pdb_get_group_sid(211) Dec 31 09:02:53 ldapmaster smbd[12836]: pdb_get_group_sid: Failed to find Unix account for application1$ Dec 31 09:02:53 ldapmaster smbd[12836]: [2007/12/31 09:02:53, 0, effective(0, 0), real(0, 0)] passdb/pdb_get_set.c:pdb_get_group_sid(211) Dec 31 09:02:53 ldapmaster smbd[12836]: pdb_get_group_sid: Failed to find Unix account for application1$ Dec 31 09:02:53 ldapmaster smbd[12836]: [2007/12/31 09:02:53, 0, effective(0, 0), real(0, 0)] passdb/pdb_get_set.c:pdb_get_group_sid(211) Dec 31 09:02:53 ldapmaster smbd[12836]: pdb_get_group_sid: Failed to find Unix account for application1$ Dec 31 09:02:53 ldapmaster smbd[12836]: [2007/12/31 09:02:53, 0, effective(0, 0), real(0, 0)] passdb/pdb_get_set.c:pdb_get_group_sid(211) Dec 31 09:02:53 ldapmaster smbd[12836]: pdb_get_group_sid: Failed to find Unix account for application1$ Dec 31 09:02:53 ldapmaster smbd[12836]: [2007/12/31 09:02:53, 0, effective(10064, 10000), real(10064, 0)] rpc_parse/parse_samr.c:init_sam_u ser_info21A(6318) Dec 31 09:02:53 ldapmaster smbd[12836]: init_sam_user_info_21A: User application1$ has Primary Group SID (NULL SID), Dec 31 09:02:53 ldapmaster smbd[12836]: which conflicts with the domain sid S-1-5-21-3991578539-3149662252-1894531253. Failing operation It looks like only Maschines are involved, anyone an idear? what can i do ? .