I have a Win 2000 server and run backups of several NT servers and an Exchange
server. Periodically the Exchange backup does not run, and I get a message
saying that the Job Engine service terminated unexpectedly. The affected
job no longer appears in the job monitor, nor do any future instances of
the scheduled job appear. When I manually restart the job engine service,
and reschedule the job the backups run normally again.

any ideas?