Hi Tech83

Thank you for the input.

Page Fault...

Ran the diagnostic tool from the boot floppy.  Had it do several passes for all 6 tests.  All 4 sections "succeeded."  "No errors found."

To clarify, had computer for several years. Never had a "page fault in nonpaged area."  I only started getting them the day the 2010 to 2011 upgrade was completed.

Live Update...

I still have the I NAV-ESD-18-1-0-37-EN.exe (83.6 MB) on my computer.  (Direct download and install offline was the only way to go, since the "over then net" upgrade tied up my internet connection for three months.)

- Should I re-install NAV-ESD-18-1-0-37-EN.exe or is there a newer version I can download and install offline? (I have installation key#)

- Do I have to uninstall before re-installing?

-  Help, About displays version 18.5.0.125.  Is that what NAV-ESD-18-1-0-37-EN.exe installed or did Norton do some kind of auto-upgrade? (I have had "automatic upgrade to new version" turned off)

If all else fails, can I just re-install 2010?  It worked flawlessly (until it started upgrading to 2011)

Yeah, I know.. I know... 2010 does not upgrade without user prompting, but it must not be much of a prompt .  LOL

Been user of various anytivirus programs going back to the days of DOS 5.0.  Installed them.  Used them to clean viruses.  Even supported them from time to time.  I have been happy with NAV since 2006, but I have never had this kind of prolonged problem before.   The only problem with NAV I had in the past was if a user ran the  old "Intelligent Updater",  Live Update stopped working. 

Any help would be greatly appreciated.