Hi.
I just said I would add my two cents.
Look at the back of the dryer and you will see three rivets or screws. If you see cracks then the rear bearing has failed. To check what you do is reach in and see if you can lift the drum at its furthest with your arm. It may need strength-ish to do this - It shouod not move in anyway. If your rear bearing is loose then you need to fit a new one and yes this is a common problem and if you check your rear vent its probably crumpled. This may lead to overheating and rear bearing failure although will hoover admit it... i dont know.
George
October 2006