blender+leopard+macbook=problems, why?

Hi everybody!
I know, this topic is very good known, but maybe you found a solution that I couldn’t find.
I use macbook with x3100 and when I started Blender it broke after a few minutes. Then I found a script. I downloaded xcode, installed it and used OpenGL to lauch Blender. The result was it worked very slow (when I launched it without OpenGL it worked fine, of course only a few minutes) and broke too.
Had you the same problem too (I mean restart)? Have you found any sloution?