Well I just got started on Syberia a few days ago, and I'm really enjoying it so far except for one thing. The game crashes randomly every time I play it, where everything on screen freezes and the sound loops. I can't alt-ctrl-delete or anything, my PC is completely locked up and the only way I can get out of it is by pressing the power button. Sometimes it happens in the first 10 minutes I start up, sometimes I can get by for almost half an hour until it crashes.
I have tried: installing the patches, launching in compatibility mode for windows 98, updating sound and video drivers, un- and re-installing the game, all in vain. I'd really like to play the game without the constant paranoia of a solid crash at any second.

Note: I'm playing on an Aluminum Macbook Pro with Vista Home Premium on Bootcamp.
Any help would be much appreciated!!