Hello,
It seems the problem occurs after the WIndows 2003 SBS SP 1 install. When the job engine service stops, does it give you any errors? Also check the Windows event logs (application and system) to find any relevent errors.
Is the SBS server a domain controller? If so, are there any other domain controllers in this domain? In case you are not using the latest release of version 10.0, do upgrade to it and then test the results. Here is the link for the upgrade:
http://support.veritas.com/docs/277181
Do update on the above details in order to better analyse the problem.
Additional Information :
For information on the recent VERITAS Backup Exec security vulnerabilities, including links to the downloads for the necessary hotfixes, please refer to the following document:
Patch summary for Security Advisories VX05-001, VX05-002, VX05-003, VX05-005, VX05-006, VX05-007
http://seer.support.veritas.com/docs/277429.htm
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