last time i tried norton it was the gamer version of the antivirus only. there was a notable increase in boot time and when opening certain programs. im trying nis 2010 everything enabled still running the programs in my signature and i really cannot fault it i cannot see any slowdown whatsoever. im trying it because a rogue installer got past my set up recently, causing my to use my an image restore. been 4 days now and i m really liking this program! and i never thought i would say that!