i can not run the "halt" and "reboot" commands as a normal user, even if I changed the permisions for them, once from the KDE menu, after thet manually, from console. while the reboot command is not a very big issue, the halt one is, because the computer is used at home, the other users do not know how to use a linux machine and i don't like it to be allways on. If somebody knows a way to solve it, PLEASE HELP!!!!!!!!!!!!!