Norton WMI Update Master Patch is also available - it's 1300.9KB
The Norton Windows Management Instrumentation (WMI) Update adds compatibility to the Windows Security Center so that it may accurately report the status of your Symantec security software. This patch will install on Windows XP, but will not take effect unless you have the Windows Security Center installed. The Windows Security Center is a specific component of Windows XP Service Pack 2. To fully obtain the Norton WMI Update, you must run LiveUpdate twice.
FAQ: Windows XP Service Pack 2 and your Norton security products
Norton Internet Security & Norton AV update:
Adds a Live Update command line so that Norton WMI Update can be downloaded via Live Update. 66.8KB
Note: No idea if the above update applies to all version of NIS or NAV. It does in NAV/NIS 2004