Recently I was away for about a month from one of my machines. When I turned it on all was good, Then befor shutting down I wished a quick scan so before I scanned I asked for an update. It was large, . About 3/4 through my machine froze. I had to reload all recovery disks --which take time. The to get the ability to use printer etc. it took much more time. This also happened to me a few years ago. I AM AFRAID to get Norton up dates.