bug: Blender crashes on OBJ import

Running Ubuntu 8.10 on a Dell Inspiron 1525 and blender 2.49.

Saved a makehuman file - I get an .obj, a .bvh and a .obj.mtl which I have no idea what to do with.

On importing the obj and bvh, I get an armature and object. Then blender vanishes without comment.

Sometimes this doesn’t happen straightaway - it’ll let me play for a bit. Then I’ll do something like roll the mouse wheel or press ‘1’, and next thing I know I’m staring at my desktop.

Haven’t researched this thoroughly, no idea what to do about it. I’m guessing it happens at a screen refresh or something.