I have a Samsung NP350V5C laptop running W7. It came installed with Norton AV which I replaced with Avast. However an icon in the notification area shows Norton online back up still runs. As this is usually on either a 30 or 60 day trial I can only assume that it was given with the laptop as a freebie as I have owned the machine for 6 months. Would there be any reason not to uninstall this?