Mine did the same in jan 07 too,,,
Unplug it - pull it out, get a load of towels and lean it backwards to let the water drain out
That worked first time ...
Coincidentally two days ago it started to do something similar .. so i took the top and side covers off, did the drain thing ( no water in it this tome though ) took off the bottom plate, wiggled all the wires and pushed them on as hard as i could .. hit the big motor three times with the base of a screwdriver - put it all back together and it works like a dream again lol
worth a go before you call someone out :)
DONT FORGET TO UNPLUG IT FIRST
Craig
February 2007