[Samba] locking.tdb - Failed to open byte range locking database

[bob.reven at unix1.trinity.ox.ac.uk]

i have taken a default intel redhat 7.2 machine which came with 
samba 2.2.1a and removed samba, samba-common, samba-client and
samba-swat.

i also removed /etc/samba and /var/lock/samba and all samba log files

i then installed the samba RPM for samba 2.2.5 from: 
http://se.samba.org/samba/ftp/Binary_Packages/redhat/RPMS/7.2/samba-2.2.5-
1.i386.rpm

i then installed this with rpm -ivh samba-2.2.5-1.i386.rpm and samba
appears to work but smbstatus reports the following:

          Samba version 2.2.5
          Service      uid      gid      pid     machine
          ----------------------------------------------

          Failed to open byte range locking database
          ERROR: Failed to initialise locking database
          Can't initialise locking module - exiting

the files locking.tdb and brlock.tdb are indeed missing. in fact looking in
/var/lock/samba i can only see:
    -rw-r--r--    1 root     root         8192 Jul 23 16:43 connections.tdb
    -rw-------    1 root     root          696 Jul 23 16:43 messages.tdb
    -rw-r--r--    1 root     root         8192 Jul 23 16:43 unexpected.tdb

why has locking.tdb not been created either by the RPM or more likely when 
samba was started. 

can anyone suggest how to resolve this? 

any advice would be most appreciated

sincerely,

bob reven