Actually, I slightly challenge the received wisdom that kids are more au fait with electronics than their parental old f*rts.

I don't think my son has ever removed the accumulated crap files off his laptop, run a defrag, a virus scan, a backup - zilch! He has fallen over the power cable so often that he's had to buy a new charger. The dust on the keyboard has to be seen to be believed. (That and the floor covered in sticky plates, Coors and Peroni bottles, 5p pieces, Mafia books, etc). Yeeurch. Oh yes, who allowed his girlfriend to leave a Canon Ixus in an open tent at the Monsters of Rock festival? At least he still has the charger and the box....

When my daughter was at Uni she cleverly knocked a mug off a top shelf onto her laptop, removing several function keys. She later spilled a glass full of orange juice all over the keyboard, and the hard drive subsequently failed. Guess which silly sod 200 miles away had to organise the pickup, repair and return?