it isn't that Norton is a resource hog ( it deffinetly is ) but it gets in everything, and if it does not like somthing, it stops it or prompts for further action... I have it on my vista laptop cause it came with it, and I havn't bothered to remove it. I WUBI installed Ubuntu so I don't use Vista anyway.. when I use Vista, it conflicts with the ACER software the computer came with, and it takes 15 mins to boot up