Me too. I desperately wanted to turn that feature off but never managed to find a way. I can't tell you how many times I was just jiggling a window around (usually the browser, while I thought something through or tried to work out what I was going to do next), and all of a sudden my other windows got minimized.

Before that it used to be holding the shift key for 5 seconds while I paused to think. That was especially infuriating if you didn't notice and ended up with 'sticky keys'.