Believe me, it's all because of Flash Firebug in FIREFOX! I disabled flash firebug in firefox, restarted firefox, removed the flash firebub, closed firefox, opened the fireworks, and happiness returned to my macbook. After much time and many attempts the fireworks works again.
I can not believe that a firefox plugin could cause me so much trouble.
Here is the source of the solution that saved my day: http://www.hightechdad.com/2012/04/23/how-to-fix-adobe-fireworks-hanging-after-launch-on-macos/