I've been using NAV 2002 since Sept 2002. By the time my current subscription expires, it will be four years. At that point, I think I'll switch to something else; I believe they will no longer support NAV 2002. Anyway, it's worked fine for me.
I got NAV 2002 as part of NSW (Norton System Works 2002), which I originally used with Win 98SE. When I upgraded the OS on my main machine to Win XP, I installed only NAV from the NSW CD. When I bought NSW, it was bundled with Norton Personal Firewall, which I still use. Works for me.
Now, when it comes to uninstalling Norton, I expect I may be cursing Symantec. Removing their components seems to be where so many complaints arise.