To keep it from grinding your hard drives scanning for viruses (obstnsibly to protect you, but really o protect them from clickfraud) you have to use administra

To keep it from grinding your hard drives scanning for viruses (obstnsibly to protect you, but really o protect them from clickfraud) you have to use administrator privileges to blackhole one of its folders. There is no option to turn it off. It will grind your media and backup drives every week, shortening their life. (Chrome Cleanup Tool)