Hi this is probably a issue with your graphics card, a bug report with the same problem was just closed - try turning down/off your hardware acceleration and see if that fixes it. Also try ungrading to your latest graphics card driver.

I'd be interested in narrowing a bit more where the problem might be here.

- Does it crash when you snap to the edit mode mesh or only when you snap to another object?
- Does it depend on the snapping mode (closest, median, center) or is it independent?

To go any further, we'd have to use a custom Blender build. If you can build Blender yourself, that'd be perfect, otherwise, I could arrange something to provide test builds for you.

Tom:
I changed the hardware acceleration setting of the GPU from the default 'Multi display performance mode' to 'Compatibilaty performance mode' (I use only 1 display), since then I haven't experienced any Blender crashes.

Martin:
Untill now the solution offered by Tom seems to fix the problem. I use the tool at closest mode for quad meshes only, no multires or subdivisions or anything. In contrary to what I wrote originally I use the snapping tool in edit mode only (not object mode).

So... can be closed? Let's move this to opengl tracker.

This is a generic request to test your bug report and see if it is still an issue in 2.5alpha2 if so please let me know by making a comment in this report ie 'also in 2.5alpha2' and I will add it to the 2.5 bug list.