[Samba] unable to open passdb database

[Casey Lewis]

Hi all!
I'm having some wierd problems with my Samba v2.2.3a install on a 
Slackware 7 box. The Samba server is a member of an NT 4 Domain and I am 
having intermittent drive mapping problems. We have a logon script that 
maps several drives for users on our NT 4 box. Those drives are on our 
Samba server.

Sometimes when the script runs I get 1326 errors on my workstations 
(Win2k SP2), and am prompted to enter my password for the share. When I 
enter my password it still fails. Its almost as though the Samba box 
can't find the NT4 PDC, but there isn't a loss of connectivity between 
the linux server and the NT4 PDC.

This is what I get in the samba log:

[2002/06/03 16:03:46, 0] passdb/pdb_smbpasswd.c:pdb_getsampwnam(1367)
   unable to open passdb database.
[2002/06/03 16:03:46, 1] smbd/password.c:pass_check_smb(555)
   Couldn't find user 'caseyl' in passdb.

Here's an excerpt from my smb.conf:

[global]
         wins server = 192.168.100.5
         domain master = no
         dns proxy = no
         encrypt passwords = yes
         socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
         max log size = 50
         preferred master = no
         security = server
         password server = rrpdc1
         veto files = /.*/ /.Apple*/ /.bin/ /Network Trash Folder/ 
/TheVolumeSettingsFolder/ /TheFi
ndByContentFolder/Icon?/Desktop/DesktopFolderDB/
         delete veto files = Yes
         local master = no
         workgroup = RR
         server string = LVFS Samba [%v, %h]
         log level = 1
         log file = /usr/local/samba/var/log.%m
         netbios name = LVFS
         os level = 0

[homes]
    comment = Home Directories
    browseable = no
    writable = yes

[public]
         path = /export/fs/PUBLIC
         writable = yes
         only guest = yes
         create mode = 0666
         directory mode = 2777
         comment = Public Folder (world writable)
         printable = no
         public = yes

[depts]
         comment = Department Folders
         path = /export/fs/depts
         writable = yes
         valid users = @users
         write list = @users
         create mode = 0660
         directory mode = 2770
         admin users = caseyl

Any help would be greatly appreciated.
TIA<

-casey