I find that the use of resources while running Vegas often boils down to the project you are working on. I work on large projects—and thus, I tax the living hell out of my computer—-I find that when the resources are shutdown, it is less likely that I will get the dreded freeze. If you are editing a short piece, I guess it isn’t as important. By the way, AVG is another good one–Again, there is no rational reason, in this day and age, for anyone to use Norton Anti-Virus.