@dorin: Thx for your reply.

Unfortunately renaming the ~/.eteks folder has no effect.

Running SH3d in 2D mode works, but is only as half as nice.

Finaly i found the bug! It was in my SH3D start script. To run SH3D with my Radeon graphics card i had to set this:
export MESA_GL_VERSION_OVERRIDE=3.1

After uncommenting this, SH3D works with the intel onboard graphics card! [B-)]