Terminal Server Security Log

Out Windows NT 4.0 Terminal Server at times reboots when a user logs out. The Security Log displays ‘Event ID 578’, Type ‘Failure Audit’, Category ‘Privilege Use’.

Question One: How do we turn the logging off in Security? Thie server is in a domain where none of the other servers are logging events on Security.
Question Two: Is there a fix or work around for this problem?

Thank You