I have just updated to a newer version of Norton internet security. The software only runs when I have set my user account control settings in the windows control panel to the lowest possible level. Any level higher than that level leads to effect that software does not run + menu entries for Norton Internet Security in Start Menu have disappeared.
When lowering the control setings to the lowest level and restart, Norton Internet Security runs again.
However, I would consider this not desirable as it leaves the control settings unused.
Looking forward to a resolution.
Regards.