unity_support_test crashed with SIGSEGV in __libc_start_main()

this is additional info for bug #1164401 with different xorg.conf

ProblemType: Crash
DistroRelease: Ubuntu 13.04
Package: nux-tools 4.0.0daily13.03.25-0ubuntu1
ProcVersionSignature: Ubuntu 3.8.0-16.26-generic 3.8.5
Uname: Linux 3.8.0-16-generic i686
ApportVersion: 2.9.2-0ubuntu5
Architecture: i386
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CrashCounter: 1
Date: Thu Apr 4 18:15:47 2013
DistUpgraded: Fresh install
DistroCodename: raring
DistroVariant: ubuntu
DkmsStatus: nvidia-304, 304.84, 3.8.0-16-generic, i686: installed
ExecutablePath: /usr/lib/nux/unity_support_test
GraphicsCard:
 NVIDIA Corporation GF119 [GeForce GT 610] [10de:104a] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: ASUSTeK Computer Inc. Device [1043:8411]
 Advanced Micro Devices [AMD] nee ATI RV380 [Radeon X600 (PCIE)] [1002:5b62] (prog-if 00 [VGA controller])
   Subsystem: Advanced Micro Devices [AMD] nee ATI Device [1002:0f02]
   Subsystem: Advanced Micro Devices [AMD] nee ATI Device [1002:0f03]
InstallationDate: Installed on 2013-04-03 (0 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha i386 (20130402.1)
MachineType: Dell Inc. OptiPlex GX620
MarkForUpload: True
ProcCmdline: /usr/lib/nux/unity_support_test
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-16-generic root=UUID=ee23b2b7-91c0-4027-bf27-7a92290dd866 ro quiet splash vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0x804920a: movzbl (%esi,%eax,1),%ebx
 PC (0x0804920a) ok
 source "(%esi,%eax,1)" (0x00000001) not located in a known VMA region (needed readable region)!
 destination "%ebx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: nux
StacktraceTop:
 ?? ()
 __libc_start_main () from /lib/i386-linux-gnu/libc.so.6
 ?? ()
Title: unity_support_test crashed with SIGSEGV in __libc_start_main()
UnitySupportTest: Error: command ['/usr/lib/nux/unity_support_test', '-p', '-f'] failed with exit code -11:
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
dmi.bios.date: 11/30/2006
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A11
dmi.board.name: 0HH807
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 6
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA11:bd11/30/2006:svnDellInc.:pnOptiPlexGX620:pvr:rvnDellInc.:rn0HH807:rvr:cvnDellInc.:ct6:cvr:
dmi.product.name: OptiPlex GX620
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.9~daily13.03.29-0ubuntu1
version.libdrm2: libdrm2 2.4.43-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0.3-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0.3-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.13.3-0ubuntu4
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2b2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.5-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.7-0ubuntu1
xserver.bootTime: Thu Apr 4 18:14:27 2013
xserver.configfile: /etc/X11/xorg.conf
xserver.devices:
 input Power Button KEYBOARD, id 6
 input Power Button KEYBOARD, id 7
 input Logitech Optical USB Mouse MOUSE, id 8
 input Dell Dell USB Keyboard KEYBOARD, id 9
xserver.errors:
 NOUVEAU(1): [drm] failed to set drm interface version.
 NOUVEAU(1): [drm] error opening the drm
 NOUVEAU(1): 820:
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.13.3-0ubuntu4
xserver.video_driver: radeon