Created attachment 20847 [details]
xorg conf

GIT MESA
commit 6e0f8b174dddeb743b4bdc0d831eb1121f62ff50

GIT xf86-video-intel
commit 2e3c098c5ed9a8451713dc754a5f086992249336

Very resent X server with dri2 support, unable to get commit # as I did a pull a few minutes ago and the current tree doesn't seem to build 

GIT libdrm
commit b0d93c74d884b40bd94469a5ef75fdb2fef17680

GIT anholt kernel tree
commit 139df2fa0e8350c9ec5b9d6991ec205bb44e00f1

Backtrace:
0xb7858a67 in _tnl_draw_prims () from /usr/lib/dri/i965_dri.so
(gdb) bt
#0  0xb7858a67 in _tnl_draw_prims () from /usr/lib/dri/i965_dri.so
#1  0xb779a560 in brw_draw_prims () from /usr/lib/dri/i965_dri.so
#2  0xb77a03d4 in meta_draw_quad () from /usr/lib/dri/i965_dri.so
#3  0xb776fd6e in intelClear () from /usr/lib/dri/i965_dri.so
#4  0xb77c9324 in _mesa_Clear () from /usr/lib/dri/i965_dri.so
#5  0xb7ec72ba in glClear () from //usr//lib/opengl/xorg-x11/lib/libGL.so.1
#6  0x084311e8 in drawview3dspace ()
#7  0x082c6d05 in scrarea_do_windraw ()
#8  0x081fcee4 in force_draw ()
#9  0x082aecd2 in ?? ()
#10 0x00000000 in ?? ()


d13f00l-desktop blender-2.48a-linux-glibc236-py25-i386 # ldd blender
        linux-gate.so.1 =>  (0xffffe000)
        libpython2.5.so.1.0 => /usr/lib/libpython2.5.so.1.0 (0xb7ea1000)
        libSDL-1.2.so.0 => /usr/lib/libSDL-1.2.so.0 (0xb7e39000)
        libGL.so.1 => //usr//lib/opengl/xorg-x11/lib/libGL.so.1 (0xb7dc3000)
        libGLU.so.1 => /usr/lib/libGLU.so.1 (0xb7d53000)
        libX11.so.6 => /usr/lib/libX11.so.6 (0xb7c2b000)
        libXi.so.6 => /usr/lib/libXi.so.6 (0xb7c20000)
        libutil.so.1 => /lib/libutil.so.1 (0xb7c1b000)
        libc.so.6 => /lib/libc.so.6 (0xb7af4000)
        libm.so.6 => /lib/libm.so.6 (0xb7acc000)
        libdl.so.2 => /lib/libdl.so.2 (0xb7ac8000)
        libpthread.so.0 => /lib/libpthread.so.0 (0xb7ab1000)
        libXext.so.6 => /usr/lib/libXext.so.6 (0xb7aa1000)
        libXxf86vm.so.1 => /usr/lib/libXxf86vm.so.1 (0xb7a9a000)
        libXdamage.so.1 => /usr/lib/libXdamage.so.1 (0xb7a96000)
        libXfixes.so.3 => /usr/lib/libXfixes.so.3 (0xb7a90000)
        libdrm.so.2 => /usr/lib/libdrm.so.2 (0xb7a87000)
        libstdc++.so.6 => /usr/lib/gcc/i486-pc-linux-gnu/4.3.1/libstdc++.so.6 (0
xb7998000)
        libgcc_s.so.1 => /usr/lib/gcc/i486-pc-linux-gnu/4.3.1/libgcc_s.so.1 (0xb
7989000)
        libXau.so.6 => /usr/lib/libXau.so.6 (0xb7985000)
        libXdmcp.so.6 => /usr/lib/libXdmcp.so.6 (0xb797f000)
        /lib/ld-linux.so.2 (0xb7fd2000)


Running in UXA mode, happens also in EXA.

Dmesg:
EXT3-fs: recovery complete.
EXT3-fs: mounted filesystem with ordered data mode.
Adding 1004052k swap on /dev/sda2.  Priority:-1 extents:1 across:1004052k
r8169: eth2: link up
r8169: eth2: link up
eth2: no IPv6 routers present
libdrm.so.2[5316]: segfault at 1 ip 00000001 sp bfc538d4 error 14 in libdrm.so.2.3.0[b8050000+7000]
libdrm.so.2[5317]: segfault at 2 ip 00000002 sp bff363b4 error 14 in libdrm.so.2.3.0[b7f32000+7000]
libdrm.so.2[5318]: segfault at 2 ip 00000002 sp bfb627d4 error 14 in libdrm.so.2.3.0[b805d000+7000]
[drm] Initialized drm 1.1.0 20060810
pci 0000:00:02.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
pci 0000:00:02.0: setting latency timer to 64
pci 0000:00:02.0: irq 1275 for MSI/MSI-X
[drm] Initialized i915 1.6.0 20080730 on minor 0



Steps to reproduce: 
Open blender
select an empty area, left click like you were going to select something and drag the mouse around.  Will crash in < 2 seconds, 100% of the time.  Will lock X.  Will have to reboot, card gets wedged. 



Xorg file attached.