Hi All, I have encountered following issue after everything worked fine for a year: I have a unix directory /proj/admin which group ownership is UNIX group of "engadm". In samba, I configured as following # This one is /proj/admin [admin] comment = project admin path = /proj/admin writable = yes valid users = @engadm create mode = 0664 directory mode = 1775 case sensitive = yes mangle case = yes strict locking = yes The "admin" share only works when I have a UNIX account with primary group ID is "engadm". If I have an unix acccount with "engadm" as secondly UNIX group(which means the primary group is something else), it will keep prompting me usrname/passwd when I try to mount the share on my PCs. Then no matter what username/passwd I try, it always fails. If I do $ ./smbclient //js1/kitsdev -U username%passwd added interface ip=10.13.46.29 bcast=10.13.46.255 nmask=255.255.255.0 Domain=[LOCERD01] OS=[Unix] Server=[Samba 2.2.3a] tree connect failed: NT_STATUS_WRONG_PASSWORD If I change my unix account primary group to be "engadm", I'll have no issue: ./smbclient //js1/pdt2 -U username/passwd added interface ip=10.13.46.29 bcast=10.13.46.255 nmask=255.255.255.0 Domain=[LOCERD01] OS=[Unix] Server=[Samba 2.2.3a] smb: \> I have to stresss again that this configuration worked fine until suddenly one day issue came out. All samba configuration has not been changed before and after the problem came along. Since I am a UNIX administrator, I do not have much idea what happened to Windows environment. Please advise what could causes this failure. Thanks Min Yang Intel Corp.