Macbook Pro Black Screen

I’m getting black screens that force me to reboot on my macbook pro, where everything seems dead.
I mention it here because it has only happened when running Unity3D games from my desktop.
Is this a Snow Leopard problem you’ve heard about? Of course I’m on my way to the Apple store but I just thought I’d check in here to see if anyone else had experienced something similar using Unity.

thats a common prob with standby but of total random nature (I get it once per 40 - 60 standbys) if that is what you are getting: You reopen the lid, but the screen does not power on, only way to power it on again is force reboot the system.

nope. This is while I’m running a Unity3D game from the desktop, not standby.

I get this too. My last macbook pro eventually died because of it. I got a radeon pro graphics card to avoid it on this machine.