Hi! I'm taking a computer class in high school. The teacher's computer has Apple Remote Desktop to control any computer when necessary. The problem is, the class helper has access to this computer and usually takes control of my computer and mess up with my computer project "as a joke". My only workaround to pull the Ethernet cord from my eMac before he does so; if you do it after, the computer stops responding until after a while when the cord is back in. This is usually when the helper leaves the computer; I assume he has to give me back control of my computer before I can use it. My question is: is there a command I can use to break free from this control? If not, is there a convenient workaround? I know I can pull out the Ethernet cord, but I lose my internet connection by doing so. Talking to the teacher doesn't help; the teacher doesn't take it seriously. Thanks for helping me!