OD archive failing to create archive

hi, I have an OS X 10.5.5 Xserve G5 that is set up in a Magic Triangle configuration. The OD database is almost entirely made up of computer records for MCX management. The server is working well and doing it's job with the exception of one thing (to my knowledge): When I try to archive my OD database, it is fails to create the archive. As I watch the slapconfig logs I see it go through 5 out of the 6 steps that a working archive goes through (1 - Backing up LDAP database, 2 - backing up password server database, 3 - Backing up Kerberos database, 4 - Backing up configuration files, 5 - Backing up local directory database, 6 - Creating archive), however it errors out at the end of step 5 with the following error message: Error in backing up keychain -25300 any ideas on how I go about fixing this or what I should start investigating first? I have run Keychain First Aid verification on the diradmin account as well as my account and they both pass. thanks in advance paul