Thanks pals. I have the same problem with my machine as well. When it happen, my wife gave the dum a good shake (& kick), then it worked again.
But after shaking it a thousand time today, and start thinking buying another washing machine.... that forced me to search internet for a fixing solution. It is finally located! It is just the "balance switch" got jammed with the scum. Give a good clean, it poped out,and works again!
PS the "balance switch" is located behind the panel. You can find it connects to a white plastic lever hinging down next to the dum.
David Wu
September 2007