I am having a similar problem I have blown through the drain tube mentioned above and resealed the sliding bayonet drain valve that sits to the bottom right hand side of the door as you look at it. I am waiting to see if that has solved the problem! Fingers crossed.
Ian
November 2011
I had the same problem, it is simple, there is a flow hole, botton left, just above the water container, if you get an at least .5m of any wire and push it down there, that will remove the blockage (which is the cause of the leak)
dadwhofixesitall
January 2009
Is the seal still intact? It might have stretched and not making a proper seal.