From the May 4 New York Times (online):
LIVERPOOL, N.Y. — The students at Liverpool High have used their school-issued laptops to exchange answers on tests, download pornography and hack into local businesses. When the school tightened its network security, a 10th grader not only found a way around it but also posted step-by-step instructions on the Web for others to follow (which they did). . . .
So the Liverpool Central School District, just outside Syracuse, has decided to phase out laptops starting this fall, joining a handful of other schools around the country that adopted one-to-one computing programs and are now abandoning them as educationally empty — and worse.
Read Free or Die 
Children find their way around new technologies all of the time… It looks like its time to make network security “more secure”… if that is possible