Problem with smbpasswd

[Robert.Forney at email.moore.com]

Any clues as to why we are experencing this problem?
commands executed as a normal user, not as root

$ uname -a
HP-UX swamy B.11.00 B 9000/800 1441622391 16-user license
$ smbpasswd
Old SMB password:
New SMB password:
Retype new SMB password:
machine 127.0.0.1 rejected the tconX on the IPC$ share. Error was : code 0.
Failed to change password for lprwf1
$ cat smb.conf
# Samba config file created using SWAT
# from ltseb1.lgn.bcs.moore.com (172.27.9.105)
# Date: 2000/11/13 10:24:36

# Global parameters
[global]
        workgroup = LOGAN-NT
        netbios name = SWAMY
        server string = Samba Server
        encrypt passwords = Yes
        update encrypted = Yes
        syslog = 0
        log file = /var/opt/samba/log.%m
        max log size = 1000
        printcap name = lpstat
        local master = No
        wins server = 172.27.12.233
        read only = No
        short preserve case = No
        dos filetime resolution = Yes

[printer]
        path = /tmp
        print ok = Yes

[homes]
        comment = Home Directories
        browseable = No

[tmp]
        path = /tmp

[ff]
        comment = home directory
        path = /apps/ff
        valid users = fharris

[apps]
        comment = home directory
        path = /apps
        valid users = lhmls1

[u1]
        comment = home directory
        path = /main/u1
        valid users = +prog, +scan, +cards, +prod

[u2]
        comment = home directory
        path = /main/u2
        valid users = +prog, +cards, +prod