Problems with radeon_dri and Blender

[meino.cramer at gmx.de]

Hi,

When using Blender my radeon_dri driver crashes with a segfault (and
Blender follows :-/  ). But it only happens when some very specific actions
are performed and only if the Shading ("Z") is activated for the 3D view.

Currently I am only able to watch this. And dont know how to pinpoint
the problem and whether the radeon_dri driver or Blender (or both) or
the hardware habe a problem.

If someone is interested, I will post an *.blend file to trigger the
segfault.

What can I do to help to find and fix the problem, since a crashing
blender makes my workflow very much ineffective... ;)

Thank you very much in advance for your help!

Kind regards,
Meino

My system:
I am using an uptodate Gentoo-Linux with

mesa-7.0.3

xorg-server-1.4.2