Samba and Unix Password Sync

[Thomas Weber <weber@num.uni-sb.de>]

Hello, 

I'm trying to activate Unix Password Syncing in Samba (Distribution: Sarge).
However, it doesn't work:

thomas@gucky:~$ smbpasswd
Old SMB password:
New SMB password:
Retype new SMB password:
cli_pipe: return critical error. Error was Call timed out: server did not
respond after 20000 milliseconds
cli_oem_change_password: Failed to send password change for user thomas
machine 127.0.0.1 rejected the password change: Error was : Call timed out:
server did not respond after 20000 milliseconds.
Failed to change password for thomas

If I deactivate the syncing in /etc/samba/smb.conf, Samba works without
problems - also changing the password is no problem.

Another (perhaps related) problem:
After the failed attempt to change the password (as above), the Samba demon
isn't stopped by its init.d script anymore:

root@gucky:/etc/samba# /etc/init.d/samba stop
Stopping Samba daemons: nmbd smbd.
root@gucky:/etc/samba# ps axu | grep sm
root      4131  0.0  0.5  9604 3072 ?        S    15:03   0:00 /usr/sbin/smbd -D
root      4146  0.0  0.1  3236  712 tty1     S+   15:04   0:00 grep sm

There's no .pid file in /var/run/samba anymore. If I restart Samba, netbios-ssn
doesn't listen anymore:

root@gucky:/etc/samba# /etc/init.d/samba restart
Stopping Samba daemons: nmbd smbd.
Starting Samba daemons: nmbd smbd.
root@gucky:/etc/samba# netstat -a | grep netbios
udp        0      0 dhcp31-240.p:netbios-ns *:*
udp        0      0 *:netbios-ns            *:*
udp        0      0 dhcp31-240.:netbios-dgm *:*
udp        0      0 *:netbios-dgm           *:*

To get Samba back to working, I need to kill the demon manually.

Any ideas?

/etc/smb.conf:

# Global parameters
[global]
	workgroup = NUMERIK
	server string = %h server (Samba %v)
	obey pam restrictions = Yes
	passdb backend = tdbsam, guest
	passwd program = /usr/bin/passwd %u
	passwd chat = *Enter\snew\sUNIX\spassword:* %n\n *Retype\snew\sUNIX\spassword:* %n\n .
	unix password sync = Yes
	syslog = 0
	log file = /var/log/samba/log.%m
	max log size = 1000
	unix extensions = No
	dns proxy = No
	panic action = /usr/share/samba/panic-action %d
	invalid users = root

[homes]
	comment = Home Directories
	read only = No
	create mask = 0700
	directory mask = 0700

[printers]
	comment = All Printers
	path = /tmp
	create mask = 0700
	printable = Yes
	browseable = No

[print$]
	comment = Printer Drivers
	path = /var/lib/samba/printers

Best regards
Thomas