Hi
First, remove the powder/liquid tray and clean it thoroughly. Clean the inside of the machine wear the tray goes. There may be a load of black gunk in there. Then clean the rubber seal on the door and on the machine. I would use a mixture of white vinegar and bicarb. Use a toothbrush (old or your other half's ;) ) to really get in there and a water bottle spray filled with vinegar to get to the hard to reach places.
Once that's done put the drawer back and do a boil wash with an old towel and a cup or two of white vinegar in the soap and fabric conditioner compartment. Once the cycle has finished remove the towels and leave the door and drawer open to let the machine dry.
You may have to repeat this a couple of times. After you use your washer in the future always leave the door open to let the moisture dry. Also it is worth running vinegar through a boil wash every couple of weeks to kill the bacteria.
Rinse Psycho
May 2009