Hello--I have had the same problems with HE2 washer made in 2004 -- with a dryer stacked on top of it, it has traveled just a little, not across the laundry room. But the vibrations have been very violent and scary so I got a repair person in to take a look, and then spoke with additional repair people to be sure I was hearing the right answer. Repair people told me the bearing (which holds the basket) is wearing out and the cost to repair this is more than a whole new washing machine. This is a problem with most front loaders--the vibrations that get so much water out also wear out the parts. I have just ordered a unitized laundry center with washer and dryer--I much prefer top load with agitator to the front loaders anyway. And I have to replace the dryer because the stacked units will only go with each other and I can't stack the dryer safely on another washer. FYI, repair people tell me that 8-10 years is unfortunately the expected life span of a front load washing machine, which seems awfully short given the cost of these. If you can keep your dryer, you are lucky; mine is working fine but as noted I can't keep it since no room to put the machines side by side.