I have had gradually deteriorating performance on my Windows XP Professional machine (Mozilla) and purchased S&D to clean it up. Other virus ware was removed previously. Scan detected 1700 problems and I accepted their removal. Everything worked well until startup the next day. The machine would not load until I realized it was just loading verrry slowly. Eventually I uninstalled S&D and it would run a little. Tonight I booted and after about three hours, I had my email up and connected. Now I do get an error message about Windows Desktop missing files but I am not sure of the next step. Should I reinstall S&D and try to restore the machine to prescan conditions? Is that even possible? Now the printer is not being recognized and I am leery of shutting the machine down again. Suggestions/help would be appreciated. This purchase has really backfired on me. Khinph