Problem with openldap backup script

[Nick Milas <nick@eurobjects.com>]

Hello,

I'm running openldap 2.4.22 using Buchan's CentOS/RHEL 5 RPMs. For some 
reason, although the backup script seems to be running successfully 
(either manually or by cron), it produces no results whatsoever:

   # cd /usr/share/openldap2.4/scripts/
   # ls -la
   total 60
   drwxr-xr-x 2 root root  4096 Dec 27 22:14 .
   drwxr-xr-x 4 root root  4096 Dec 27 22:14 ..
   -rwxr-xr-x 1 root root 16584 Apr 27  2010 ldap-common
   -rwxr-xr-x 1 root root  3776 Dec 28 09:14 ldap-hot-db-backup
   -rwxr-xr-x 1 root root  4979 Apr 27  2010 ldap-reinitialise-slave

   # ./ldap-hot-db-backup -v 4
   Warning: Starting backup
   Warning: Successfully ran backup to temporary directory
   Info: We have 0 of 0 locks
   Info: Starting switch
   Warning: Switched new backup to good backup successfully
   Info: successfully removed all lock files
   Warning: Backup run completed successfully

   # ls -la /var/lib/ldap2.4/backup
   total 16
   drwxr-xr-x 2 ldap ldap 4096 Jan  3 19:24 .
   drwxr-x--- 4 ldap ldap 4096 Jan  4 11:06 ..

I am trying to go through the script code (in the backup script and in 
ldap-common) but it's no easy task. Can someone suggest some solution? 
What may be going wrong? Why everything seems successful although no 
backup is taken?
What are these 0 of 0 locks?

Any help will be appreciated.

Thanks in advance,
Nick