Finding Which Application Requires Specific User Privilege?

Is there any application that would intercept a call by an application or
device driver for a specific user privilege and either log this or show it
to you? I have eventviewer messages on one computer showing every 10
minutes that the administrator account is trying to get "Act as Part of
Operating System" privilege. I would like to find out if that is a
Microsoft application, user application I trust, or some application or
device driver I cannot identify.

--
Will


.