[Samba] Receiving SMB: Server stopped responding

[Turbo Fredriksson]

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I've upgraded to 3.0.25b, and I can't seem to get it
running for more than a few minutes before it starts
failing to find users...

This is my smb.conf:
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[global]
        workgroup = FREQVIST
        netbios name = CELIA
        server string = %h server (Samba %v)

        idmap backend = ldap:ldap://127.0.0.1
        idmap uid = 10000-20000
        idmap gid = 10000-20000

        username map = /etc/samba/smbusers
        passdb backend = ldapsam:ldap://127.0.0.1

        ldap suffix = o=FREQVIST,c=SE
        ldap admin dn = uid=samba,ou=People,o=system,c=se
        ldap machine suffix = ou=Computers
        ldap user suffix = ou=People
        ldap group suffix = ou=Groups
        ldap idmap suffix = ou=Idmap
        ldap ssl = off
        ldap passwd sync = Yes

        password server = 192.168.1.8
        encrypt passwords = true
        passwd program = /bin/passwd %u
        passwd chat = *new*password* %n\\n*new*password* %n\\n *changed*
        passwd chat debug = Yes

        winbind separator = \\
        winbind cache time = 10
        winbind use default domain = yes
        winbind offline logon = yes
        template shell = /bin/bash
        template homedir = /home/%U

        syslog = 3
        log file = /var/log/samba/samba.log
        debug pid = Yes
        debug uid = Yes
        socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192 IPTOS_LOWDELAY IPTOS_THROUGHPUT

        logon script = tid.bat
        logon home = \\%N\%U\.profile

        domain master = True
        domain logons = Yes
        client schannel = no
        preferred master = True
        os level = 70
        dns proxy = No
        wins support = yes
        time server = Yes
        hosts allow = 192.168.1.

        # Do something sensible when Samba crashes: mail the admin a backtrace
        panic action = /usr/share/samba/panic-action %d
        add machine script = /etc/samba/adduser.sh %u
        add user script = /etc/samba/adduser.sh %u
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And if I try to authenticate, this is what I get in the log:
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[2007/08/02 02:56:33, 0, pid=4768, effective(0, 0), real(0, 0)] passdb/pdb_get_set.c:pdb_get_group_sid(211)
  pdb_get_group_sid: Failed to find Unix account for martina
[2007/08/02 02:56:33, 1, pid=4768, effective(0, 0), real(0, 0)] auth/auth_util.c:make_server_info_sam(566)
  User martina in passdb, but getpwnam() fails!
[2007/08/02 02:56:33, 0, pid=4768, effective(0, 0), real(0, 0)] auth/auth_sam.c:check_sam_security(352)
  check_sam_security: make_server_info_sam() failed with 'NT_STATUS_NO_SUCH_USER'
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And the client say:
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[turbo-laptop2.pts/3]$ smbclient -U martina -L celia
Password: 
session setup failed: NT_STATUS_LOGON_FAILURE
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Any idea?
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