OK, I think I have just broken the stupidity barrier. With my face. I have accidentally trashed "System preferences". What do I do!!? I can't change any accounts now, is there anything I can do without doing a fresh reinstall? could someone send me their system preferences.app? Would that even work? I have all the preference panes in my system folder, I just seem to be missing the application "system preferences" from the application menu. Please help!