I've had more than a few computers that after they're turned on and logged onto, they have copies of regedit, explorer, and other files like Microsoft knowledge base files (kbXXXXXX) on the desktop. They're just copies, and I've made 100% sure every time before I delete them. And sometimes they will stay gone, but others they'll reappear over and over. Has anyone seen this, or does anyone know what is causing this? I appreciate everyone's answers!