I find that there is a gap in the rubber by the door that gets full of water and mouldy. Try cleaning this out with mild soap and then running the machine on a hot wash with your usual detergent. (some people run it empty, although I tend to put something in it of no consequence such as a hanky).
Hope this helps!
pollymere
February 2010
This is usually due to constantly using the cool wash cycles. This allows bacteria to breed causing the machiene to "smell" All you usually need to do is to use a boil wash cycle evey so often to sterilise the machiene and kill of the bacteria causing the smell. Hope this helps.