I'm running Debian Sid with Mesa 7.2 from experimental (needed for Direct Rendering to work with my card [ATI Radeon X1400]).
The following snippet produces a segfault:
from OpenGL.GLUT import *
When I downgrade Mesa to 7.0.3, I have no DRI anymore, but also the segfault goes away.
I attach a backtrace from gdb, in the hope that helps somehow -- if you need more info, please ask :)