When Norton 360 updated to version 22.5.2.15, the full scan suddenly started using so much CPU that I can’t run any other program at the same time. This was never a problem prior to this update. I’m running Windows Vista Home Premium. I am not in a situation where I can run my computer afterhours, so it’s not an option to run the full virus scan at night. As a result, I haven’t been able to run a full virus scan since this update.