Anti-Virus 2005 "forgetting" live updates

Hi,

My father-in-law is running Norton Anti-Virus 2005 with Windows XP. It seems top have stopped remebering when a live update has been performed.

We ran live update today. It said that it had completed with sucess and to restart with the compuiter. When we did so It said a live update had last been performed on the 4th of March. We repeated the process with the same results.