[arrandale] GPU lockup a5cb7103 (IPEHR: 0x01800002)

When i click on mail applet -> messages. My screen become black.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: xserver-xorg-video-intel 2:2.14.0-1ubuntu9
ProcVersionSignature: Ubuntu 2.6.38-3.30-generic 2.6.38-rc4
Uname: Linux 2.6.38-3-generic x86_64
Architecture: amd64
Chipset: arrandale
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
DRM.card0.DP.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
DRM.card0.DP.2:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
DRM.card0.DP.3:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
DRM.card0.HDMI.A.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
DRM.card0.HDMI.A.2:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
DRM.card0.HDMI.A.3:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
DRM.card0.LVDS.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1280x800 1280x800
 edid-base64: AP///////wAwrjVAAAAAAAATAQOAHhN46h81k1lViigiUFQAAAABAQEBAQEBAQEBAQEBAQEBEhsAfFAgFjAwIDYAML4QAAAYihYAfFAgFjAwIDYAML4QAAAYAAAADwCBCjKBCigWCQAw5AUCAAAA/gBMUDE0MVdYNS1UTFAzAOY=
DRM.card0.VGA.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1440x900 1280x1024 1280x1024 1440x900 1280x960 1152x864 1024x768 1024x768 1024x768 832x624 800x600 800x600 800x600 800x600 640x480 640x480 640x480 640x480 720x400
 edid-base64: AP///////wAEcgwAkTUwkhcTAQMIKRp46telollKliQUUFS/75CVAJUPgYCBQHFPAQEBAQEBmimg0FGEIjBQmDYAmgARAAAcAAAA/wBMQVQwQzE1OTQwMEIKAAAA/QAySx5SDgAKICAgICAgAAAA/ABYMTkzVwogICAgICAgAOo=
Date: Fri Feb 18 11:25:34 2011
DistUpgraded: Yes, recently upgraded Log time: 2011-02-05 11:01:46.449285
DistroCodename: natty
DistroVariant: ubuntu
DumpSignature: a5cb7103 (IPEHR: 0x01800002)
ExecutablePath: /usr/share/apport/apport-gpu-error-intel.py
GraphicsCard: Subsystem: Lenovo Device [17aa:215a]
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
InterpreterPath: /usr/bin/python2.7
MachineType: LENOVO 2516ADU
ProcCmdline: /usr/bin/python /usr/share/apport/apport-gpu-error-intel.py
ProcEnviron:

ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-3-generic root=UUID=abc01622-9f06-4c74-b895-79569d1d1146 ro quiet splash vt.handoff=7
ProcKernelCmdLine_: BOOT_IMAGE=/boot/vmlinuz-2.6.38-3-generic root=UUID=abc01622-9f06-4c74-b895-79569d1d1146 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 xserver-xorg 1:7.6~3ubuntu5
 libdrm2 2.4.23-1ubuntu3
 xserver-xorg-video-intel 2:2.14.0-1ubuntu9
Renderer: Unknown
SourcePackage: xserver-xorg-video-intel
Title: [arrandale] GPU lockup a5cb7103 (IPEHR: 0x01800002)
UserGroups:

dmi.bios.date: 06/07/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 6IET65WW (1.25 )
dmi.board.name: 2516ADU
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr6IET65WW(1.25):bd06/07/2010:svnLENOVO:pn2516ADU:pvrThinkPadT410:rvnLENOVO:rn2516ADU:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 2516ADU
dmi.product.version: ThinkPad T410
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.2.1+glibmainloop4-0ubuntu11
version.libdrm2: libdrm2 2.4.23-1ubuntu3
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10-1ubuntu3
version.xserver-xorg: xserver-xorg 1:7.6~3ubuntu5
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.13.2+git20110124.fadee040-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-1ubuntu9
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu4