In Logic 9, OS X 10.6.8, I'm getting a lot of crashes (EDIT: these crashes may not always be SSD related), and I can't seem to open the program window more than once. I keep clicking on it to open it and nothing happens, only restarting logic 9 will give me access to the program window again.
Had the same problem. 64 bit version helps a bit.
I found i had to stop the song if playing to re-open the GUI.