Broken version: 2.75 (from blender.org)
No matter if uses old or new depsgraph.
Working version: 2.74 (from blender.org)
Softbody object makes Blender crash with a segment fault.
-New scene, make the default cube to have Softbody dynamics, change render engine to Game, start Game Engine: CRASH.
Ubuntu 14.04 64x, nVidia GT620.