hi there. i have an 05 astra estate 1.7cdti diesel. last night i parked the car on a slope. gotmout of the car, let my 2 lads out of the back of the car,locked it, then went to see my parents. after 20 minutes i was going home and the car was gone. i found it lodged on someones drive with the rear 3feet up in the air pearched on a wall. upon looking into the car the hand brake was down. when i spoke to the home owners, they said it had happened about 5 minutes ago. 15 minutes after after i had parked the car!! thankfully no one was hurt and only minimal damage to a fence and wall. the front of the car was smashed in. i have contacted vauxhall uk, and they have said there is no problem with the hand brake on the astras. but after 15 minutes it rolled down the hill. anyone else shed some light on this problem. chris.