If you are still getting the problem then this may resolve it
*******
After updating Norton AV to the January 7th or 8th virus definitions, your computer slows down and
Microsoft Word and Excel will not start

http://service1.symantec.com/SUPPORT/sharedtech.nsf/docid/2004010810205113

Situation:
This document describes this problem and how to fix it.

Solution:
Symantec is investigating the cause of the problem at this time.

There is a workaround that will fix the problem until Symantec finds a permanent solution.

To use the workaround

  1.. Close all programs.
  2.. Start Internet Explorer.
  3.. Click Tools > Internet Options.
  4.. On the Advanced tab, scroll down through the list box to the Security section.
  5.. Deselect the "Check for publisher's certificate revocation" option

                         PCSOFT's List Owner's:
                      Bob Wright<[log in to unmask]>
                       Drew Dunn<[log in to unmask]>