NAV For Mac 12: Automatic Antivirus Protection Unexpectedly Turned OFF

Running on Mac OS X 10.7.2.  NAV For Mac 12 with everything up to date per Live Update.

 

Just now I went into NAV to see if there had been a newer update to the Vulnerability Protection signatures and discovered, to my surprise, that Automatic Antivirus Protection was OFF!

 

(Idle Time Scan and Vulnerability Protection were still on, and after turning Automatic Antivirus Protection back ON -- which requires an Administrator password -- the settings for that protection were still at the expected defaults.)

 

There is nothing in the NAV View History listing -- just Live Update reports.  Theis is nothing in Console > Crash Reporter or Console > User Diagnostic Reports.  And of course I have no recollection of turning this off myself.  (I presume it would have required an Administrator password if I had accidentally selected to turn it OFF.)

 

So:

 

1)  Is there a known bug that might cause this to happen?

 

2)  Are there other message strings I should search for in Console > All Messages to try to spot WHEN this happened?

 

I've no reason to believe my computer is compromised.  I presume Automatic Antivirus Protection just failed at some point and left itself turned off.  Of course, I'm runniing a full system scan now to double-check.

--Bob