This morning, in the middle of dealing with some forum messages, I suddenly got a ONE CLICK screen come up reporting:
Error 3039,69638 and indicating a SONAR problem.

I ran the Begin Support Session and it went through a series of subsequent screens starting with one with a progress bar Scanning N I S ... and then coming up with::

and then:

This did not work.

leading to this:

Leaving me with this:

Later on I was looking at the Main GUI and noticed that the SONAR slider was set to OFF and I also found a thread from last year which touched on a similar problem
Sonar drops out
http://community.norton.com/t5/Norton-Internet-Security-Norton/Sonar-drops-out/m-p/339426#M138041
which I see ends 10 pages later with somone posting about having the problem 03-22-2011 08:37 PM and no replies posted.
In that thread I saw a request to run a command prompt action so I've done it and here are the results:
My system
I've done several reboots on the system which sometimes takes the red X of the NIS toolbar icon and sometimes does not. But with it OFF -- say 45 minutes ago -- the ONE CLICK At RIsk warning has popped up again.
My, he does go on doesn't he? Well what's up Doc?
WIN 7 Home Premium 32 bit
NIS 2011 18.6.0.29
------------------------------
Message:
Linares
Symantec Employee
12-06-2010 02:43 PM
Would you please do this command from a command window while SONAR still indicates as being functional?
sc query BHDrvx86
--------------------------
NIS Setting as found SONAR slider OFF
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
E:\Users\Hugh>sc query BHDrvx86
SERVICE_NAME: BHDrvx86
TYPE : 1 KERNEL_DRIVER
STATE : 1 STOPPED
WIN32_EXIT_CODE : 31 (0x1f)
SERVICE_EXIT_CODE : 0 (0x0)
CHECKPOINT : 0x0
WAIT_HINT : 0x0
E:\Users\Hugh>
NIS Setting SONAR slider set to ON manually by me
E:\Users\Hugh>sc query BHDrvx86
SERVICE_NAME: BHDrvx86
TYPE : 1 KERNEL_DRIVER
STATE : 1 STOPPED
WIN32_EXIT_CODE : 31 (0x1f)
SERVICE_EXIT_CODE : 0 (0x0)
CHECKPOINT : 0x0
WAIT_HINT : 0x0
E:\Users\Hugh>
E:\Users\Hugh>
--------------------------
Regardless of slider setting NIS reports At risk -- FIX now and fails to fix problem regardless of that slider setting.