Nonstick pans blistering after dishwasher?
How old is the piece? Is the piece actually rated for the dishwasher? 

I don't know what the latest stuff is rated for, but I've always been under the impression that non-stick coatings are pretty fragile, and that while they are better today than ever before, I just assume that I'm not supposed to dishwasher them.

Assuming that it is rated for the dishwasher, this seems odd, unless the pan was a bit old, and the coating had degraded somewhat, allowing it to fail in this way.

I REALLY think you should contact the manufacturer about this - they should have some clue what happened, and should be able to give you hints on prevention.