Vista Parental Controls has been enabled

I am seeing “Vista Parental Controls has been enabled” in the activity log every time I turn on one of my computers.  Do I need to do something?  It is highlighted in Red as if it were questionable activity.

I am seeing “Vista Parental Controls has been enabled” in the activity log every time I turn on one of my computers.  Do I need to do something?  It is highlighted in Red as if it were questionable activity.

I get the same message randomly on teh activity reports for my son's laptop.  Strange thing is it runs Windows 7, not Vista.  None of the users have Windows parental controls setup.  What's the problem?