I just found a bug in Leopard. (I Already Reported to apple, had anyone else noticed this or know of a work around...) I am running X11 on my MacBook Pro with an external Monitor. I try to drag my X11 Window to the second display. It drags fine until my Mouse Icon hits the edge of the first screen. Even if I move the mouse to the second screen I am unable to move the X11 Window into the second screen 100% (The best I can do is 1 Pixel in my primary and the rest in the second screen.