>lol
>well sergey let us say that the way of education does not work and punishment well if i can't kick them i will not work either so i go for the cord. If they brake the pc like this it will be also a punishment waiting for a reparation ;)

What we do, is charge our customers 100 Euro for the first time we must fix their system, 200 Euro the second time, 400 Euro the third time and so on. After 3-4 times they get the message. :-)