NIS2010 - Prompted my PC is UNPROTECTED

Hi,

I am not too sure if anyone has experience this :-

Ever since updating to version 17.1.0.19 of NIS2010 on mid of Nov.  It has prompted me 3 errors in less than 1 month that my system is UNPROTECTED. 

There were no pop up messages but Norton Icon in the System Tray changed to pulsing red with Windows saying that my system is UNPROTECTED.  Even after rebooting, my system is still UNPROTECTED.

I had to use NRT to remove and reinstall NIS2010 THREE TIMES!!!  Each time I scan and there were no malwares.

This has never happened in other versions. I am not too sure what is happening but really 3 errors (for whatever reasons, I do not know)…is unexceptable. 

I have not installed any programs recently. Or made any changes to NIS features.  I just don’t know what is wrong.

Can Symantec staff give me some comments on this issue.

Thank you