Actually, I think this problem is graphics related, here is why:
- on my laptop everything works fine until I enter a door
I got only 128MB Vid-Ram and just low-profile a mobile 3D card (Radeon HD 3400 series), sound works perfectly and so on...
- on my desktop I got a better graphics adaptor (NVIDIA 7800 GT, I tink it's got 512MB, but at least 256), the graphics is much better/faster, I can enter doors etc. but the game crashes every few minutes, and it seems to be sound problems - It (normally) crashes outside (in buildings it seems stable)
So my conclusion: Since sound (and perhaps CPU-speed) problems seem to crash anywhere and the sound works perfectly on my laptop, I think the interior uses some graphics feature my laptop does not provide

Strange thing with my desktop though is that the sound allready stutters during the larian-intro right after starting the game... Very stange for my card should have no problems (emu10k chip on it). And all other ganes worked till now on that particular machine.
Hopefully patch 1.04 will fix this.
Cheers, Arndt