http://www.howtomendit.com/answers.php?id=15134
Here's an answer I had to a problem after some things disappeared under the drum. The items had lodged in the rubber pipe just before the pump that empties the water. It might be that there's a blockage that is stopping the water from draining - or maybe the pump is broken?
I hope this is of use to you
Craig Gilman, August 2005