I've not had any problems within 2 1/2 years of ownership and its very rare you do hear of the
problem. Although it has happened a couple of times in the past.
They cant steal the car without the key, there is no way of bypassing the immobiliser so they'll just pinch things within the car, ie cd player. Is it really worth the hassle to a thief just for the sake of a cd player?
Although i do remember a case where the thief entered the car, found the locking wheel nut and pinched all 4wheels leaving the owner to find his car ramped on bricks in the morning
But to the opportunist thief, are they really going to stick around for 45mins stealing your wheels? Its happened once or twice i think but they were parked in dark carparks overnight, not on the street outside their house!
I wouldn't worry about it though, if a thief wants in your car, he'll get in!
Awaiting the panic now from all the newbie leon owners wondering what the fuc* this security issue is