DAZ & QUECHUBIN,
Try rebooting after you run live update and it tells you, there are no updates. My Systemworks 2000 used to do that to me running on Windows 98.
It appeared to have something to do with a "quirk" where as it would not update until after a reboot!
Just a thought - might be worth a try.
I am running NAV 2002 as part of Norton Systemworks 2002 and I have not had a problem with automatic updating (virus) nor live update.
I can doubleclick on my virus icon in the system tray or I can right click and select "Open Norton Antivirus", I can double click my Norton's Icon on the desk top, or Start, All Programs,Norton Systemworks,Norton Antivrus and I always end up at the same place - the Status screen of my NAV 2002 program from which I can select any type of scan, report, etc I desire!
I am sure you did not need to hear this.
But that would lead me to believe an uninstall - reinstall might be the answer - be sure to follow WildOptic's advise!