Originally Posted by Genocide_Hoax
I am not quite clear what you are asking for but you can always lock your screen before leaving the desk so that your brothers can't fool around with it..
If you lock the screen, at least on my Fedora 13 gnome laptop, when someone tries to use my laptop, he has a button that lets him switch to a different user.
Potentially, you then have two users logged in, and that can use too much memory and the system can become slow.
I_Da_boss, can you confirm this is what you're referring to, and also post which Linux distro you are using