For some reason Samurai can´t seem to disable the Guest account and the Shell URL protocol, with that I mean that the settings do not stay selected when I restart Samurai. I think it´s strange because sometimes some settings are already disabled but the options stay selected anyway. And btw, the guest account was already disabled when I bought this computer. About Safe XP, for some reason it can´t disable the "restrict anonymous guest access" setting", I´m not sure if this setting is already disabled. I guess it is because Samurai should take care of that.