JSI Tip 2826. 10MB EDBxxxxx.log files don't get deleted?

If you inspect your NTDS folder on your Active Directory domain controller (the default location is %SystemRoot%NTDS), you may notice that many EDBxxxxx.log files of ~ 10MB have not been deleted.

On my Active Directory domain controller, these files correspond in date/time to the System State portion of my nightly backup, tip 2265.

I have no idea why the files are not being deleted, but to resolve the problem, I added a line to the batch that invokes DELOLD:

DELOLD %SystemRoot%NTDSEDB0*.log 2

where 2 is arbitrary.