Umm. from what I read, it’s a combination of your graphics card, the MacBook and Leopard. I have Leopard with no prob.
So, if you have anything but a macbook, you’re good.
From what I understand about this it is caused by the combination of the graphics card in the Macbooks + Leopard + Blender. So there is nothing much you can do about it except try Blender on one of the new Macbooks, downgrade to 10.4 or dual boot with Linux or Windows.
I am using a very old MacBook running Tiger with a very outdated graphics card, and Blender runs just fine and dandy for me.
So yeah, I suggest downgrading, cause it’s a combination. The less problem-causing things, the better Blender runs.
Edit: btw, look around in pics, it’s a MacBook Ton uses. There is a dev using Leopard, definitely not a MacBook.