Its okay, with a little hint from my local kitchen showroom, I fixed it. I didn't know but built in dishwashers are secured from the front, generally through readily visible brackets and screws that go into either the top or the sides of the kitchen unit case.
With my dishwasher these brackets are concealed at the top of the unit, and somehow the dishwasher had dropped by about 1cm and slipped under the catches. So all I had to do was to raise the support pillars under the dishwasher, straighten a bent bracket at the top and tighten the screws. Now let us see if I get another 9 years of service out of it.
Mike Treanor, June 2008
