I know I'm not the only person to have had this problem, it seems that when history logs gets to a certain size Norton definitions stop showing up in history, and the only thing to do to get them to show up again is to clear the old logs. I have had to do this a couple of times now, and I had to do this back when I was using Norton 360 v3. Shouldn't Norton 2010 clear old entries automatically when history logs reach a certain size? If this is the case it is obviously not working properly because a few people have reported this issue on the forum over a long period of time now. I would appreciate it if someone could look into this, and try to resolve this issue.