I've had many system crashes because of this bug. Here are some lines I took from the syslog and kernel log. I hope this helps. syslog, May 26 20:26:23 oscar-desktop anacron[1399]: Updated timestamp for job `cron.daily' to 2010-05-26 May 26 20:28:50 oscar-desktop kernel: [ 464.464015] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung May 26 20:28:50 oscar-desktop kernel: [ 464.464032] render error detected, EIR: 0x00000000 May 26 20:28:50 oscar-desktop kernel: [ 464.465142] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 11778 at 11775) May 26 20:28:52 oscar-desktop kernel: [ 466.380017] [drm:i915_gem_idle] *ERROR* hardware wedged May 26 20:28:52 oscar-desktop x-session-manager[1158]: WARNING: Detected that screensaver has left the bus May 26 20:28:53 oscar-desktop acpid: client 770[0:0] has disconnected May 26 20:28:53 oscar-desktop acpid: client connected from 1529[0:0] May 26 20:28:53 oscar-desktop acpid: 1 client rule loaded May 26 20:28:53 oscar-desktop pulseaudio[1526]: pid.c: Stale PID file, overwriting. May 26 20:28:53 oscar-desktop pulseaudio[1526]: main.c: Unable to contact D-Bus: org.freedesktop.DBus.Error.NoServer: Failed to connect to socket /tmp/dbus-snjWMwup0Y: Conexión rechazada May 26 20:28:54 oscar-desktop kernel: [ 468.349487] [drm:i915_gem_entervt_ioctl] *ERROR* Reenabling wedged hardware, good luck May 26 20:28:54 oscar-desktop kernel: [ 468.680014] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung May 26 20:28:54 oscar-desktop kernel: [ 468.680026] render error detected, EIR: 0x00000000 May 26 20:28:54 oscar-desktop kernel: [ 468.680048] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 11782 at 11775) May 26 20:28:57 oscar-desktop kernel: [ 470.740018] [drm:i915_gem_idle] *ERROR* hardware wedged May 26 20:28:57 oscar-desktop acpid: client 1529[0:0] has disconnected May 26 20:28:57 oscar-desktop acpid: client connected from 1541[0:0] May 26 20:28:57 oscar-desktop acpid: 1 client rule loaded May 26 20:28:57 oscar-desktop bonobo-activation-server (oscar-1546): could not associate with desktop session: Failed to connect to socket /tmp/dbus-snjWMwup0Y: Conexión rechazada May 26 20:28:58 oscar-desktop kernel: [ 472.074908] [drm:i915_gem_entervt_ioctl] *ERROR* Reenabling wedged hardware, good luck May 26 20:28:59 oscar-desktop kernel: [ 472.904014] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung May 26 20:28:59 oscar-desktop kernel: [ 472.904025] render error detected, EIR: 0x00000000 May 26 20:28:59 oscar-desktop kernel: [ 472.904048] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 11784 at 11775) May 26 20:29:01 oscar-desktop kernel: [ 474.960019] [drm:i915_gem_idle] *ERROR* hardware wedged May 26 20:29:01 oscar-desktop kernel: Kernel logging (proc) stopped. May 26 21:21:49 oscar-desktop udev-configure-printer: parent devpath is /devices/pci0000:00/0000:00:1d.1/usb3/3-1 May 26 22:11:16 oscar-desktop AptDaemon: INFO: Initializing daemon May 26 22:11:18 oscar-desktop kernel: [ 6114.736013] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung May 26 22:11:18 oscar-desktop kernel: [ 6114.736029] render error detected, EIR: 0x00000000 May 26 22:11:18 oscar-desktop kernel: [ 6114.736044] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 996558 at 996552) May 26 22:11:20 oscar-desktop kernel: [ 6117.300016] [drm:i915_gem_idle] *ERROR* hardware wedged May 26 22:11:28 oscar-desktop pulseaudio[3312]: pid.c: Stale PID file, overwriting. May 26 22:11:29 oscar-desktop pulseaudio[3312]: main.c: Unable to contact D-Bus: org.freedesktop.DBus.Error.NoServer: Failed to connect to socket /tmp/dbus-v3kr7yIRIH: Conexión rechazada May 26 22:11:29 oscar-desktop pulseaudio[3320]: pid.c: Daemon already running. May 26 22:11:29 oscar-desktop acpid: client 900[0:0] has disconnected May 26 22:11:29 oscar-desktop acpid: client connected from 3315[0:0] May 26 22:11:29 oscar-desktop acpid: 1 client rule loaded May 26 22:11:30 oscar-desktop bonobo-activation-server (oscar-3323): could not associate with desktop session: Failed to connect to socket /tmp/dbus-v3kr7yIRIH: Conexión rechazada May 26 22:11:30 oscar-desktop kernel: [ 6127.587808] [drm:i915_gem_entervt_ioctl] *ERROR* Reenabling wedged hardware, good luck May 26 22:11:31 oscar-desktop kernel: [ 6127.920012] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung May 26 22:11:31 oscar-desktop kernel: [ 6127.920023] render error detected, EIR: 0x00000000 May 26 22:11:31 oscar-desktop kernel: [ 6127.920931] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 996560 at 996552) May 26 22:11:33 oscar-desktop kernel: [ 6130.032016] [drm:i915_gem_idle] *ERROR* hardware wedged May 26 22:11:33 oscar-desktop acpid: client 3315[0:0] has disconnected May 26 22:11:33 oscar-desktop acpid: client connected from 3333[0:0] May 26 22:11:33 oscar-desktop acpid: 1 client rule loaded May 26 22:11:34 oscar-desktop kernel: [ 6131.413585] [drm:i915_gem_entervt_ioctl] *ERROR* Reenabling wedged hardware, good luck May 26 22:11:34 oscar-desktop kernel: [ 6131.744010] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung May 26 22:11:34 oscar-desktop kernel: [ 6131.744021] render error detected, EIR: 0x00000000 May 26 22:11:34 oscar-desktop kernel: [ 6131.744927] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 996562 at 996552) May 26 22:11:37 oscar-desktop kernel: [ 6133.804016] [drm:i915_gem_idle] *ERROR* hardware wedged May 26 22:11:37 oscar-desktop acpid: client 3333[0:0] has disconnected May 26 22:11:37 oscar-desktop acpid: client connected from 3341[0:0] May 26 22:11:37 oscar-desktop acpid: 1 client rule loaded May 26 22:11:38 oscar-desktop kernel: [ 6134.951475] [drm:i915_gem_entervt_ioctl] *ERROR* Reenabling wedged hardware, good luck May 26 22:11:38 oscar-desktop kernel: [ 6135.284011] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung May 26 22:11:38 oscar-desktop kernel: [ 6135.284023] render error detected, EIR: 0x00000000 May 26 22:11:38 oscar-desktop kernel: [ 6135.284943] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 996564 at 996552) May 26 22:11:40 oscar-desktop kernel: [ 6137.340016] [drm:i915_gem_idle] *ERROR* hardware wedged May 26 22:11:40 oscar-desktop acpid: client 3341[0:0] has disconnected May 26 22:11:40 oscar-desktop acpid: client connected from 3349[0:0] May 26 22:11:40 oscar-desktop acpid: 1 client rule loaded May 26 22:11:41 oscar-desktop kernel: [ 6138.670900] [drm:i915_gem_entervt_ioctl] *ERROR* Reenabling wedged hardware, good luck May 26 22:11:42 oscar-desktop kernel: [ 6139.004012] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung May 26 22:11:42 oscar-desktop kernel: [ 6139.004022] render error detected, EIR: 0x00000000 May 26 22:11:42 oscar-desktop kernel: [ 6139.004933] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 996566 at 996552) May 26 22:11:44 oscar-desktop kernel: [ 6141.060015] [drm:i915_gem_idle] *ERROR* hardware wedged May 26 22:11:44 oscar-desktop kernel: Kernel logging (proc) stopped. May 26 22:19:49 oscar-desktop AptDaemon: INFO: Quiting due to inactivity May 26 22:19:49 oscar-desktop AptDaemon: INFO: Shutdown was requested May 26 22:23:22 oscar-desktop kernel: [ 675.760017] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung May 26 22:23:22 oscar-desktop kernel: [ 675.760037] render error detected, EIR: 0x00000000 May 26 22:23:22 oscar-desktop kernel: [ 675.760330] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 223922 at 223920) May 26 22:23:24 oscar-desktop kernel: [ 678.188017] [drm:i915_gem_idle] *ERROR* hardware wedged May 26 22:23:38 oscar-desktop pulseaudio[1517]: pid.c: Stale PID file, overwriting. May 26 22:23:39 oscar-desktop acpid: client 789[0:0] has disconnected May 26 22:23:39 oscar-desktop acpid: client connected from 1527[0:0] May 26 22:23:39 oscar-desktop acpid: 1 client rule loaded May 26 22:23:39 oscar-desktop pulseaudio[1517]: main.c: Unable to contact D-Bus: org.freedesktop.DBus.Error.NoServer: Failed to connect to socket /tmp/dbus-o2PLsFtVCb: Conexión rechazada May 26 22:23:40 oscar-desktop kernel: [ 693.788342] [drm:i915_gem_entervt_ioctl] *ERROR* Reenabling wedged hardware, good luck May 26 22:23:40 oscar-desktop kernel: [ 694.120014] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung May 26 22:23:40 oscar-desktop kernel: [ 694.120025] render error detected, EIR: 0x00000000 May 26 22:23:40 oscar-desktop kernel: [ 694.120938] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 223926 at 223920) May 26 22:23:41 oscar-desktop bonobo-activation-server (oscar-1535): could not associate with desktop session: Failed to connect to socket /tmp/dbus-o2PLsFtVCb: Conexión rechazada May 26 22:23:42 oscar-desktop kernel: [ 696.216016] [drm:i915_gem_idle] *ERROR* hardware wedged May 26 22:23:43 oscar-desktop acpid: client 1527[0:0] has disconnected May 26 22:23:43 oscar-desktop acpid: client connected from 1544[0:0] May 26 22:23:43 oscar-desktop acpid: 1 client rule loaded May 26 22:23:44 oscar-desktop kernel: [ 697.358138] [drm:i915_gem_entervt_ioctl] *ERROR* Reenabling wedged hardware, good luck May 26 22:23:44 oscar-desktop kernel: [ 697.692013] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung May 26 22:23:44 oscar-desktop kernel: [ 697.692024] render error detected, EIR: 0x00000000 May 26 22:23:44 oscar-desktop kernel: [ 697.692935] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 223928 at 223920) May 26 22:23:46 oscar-desktop kernel: [ 699.752014] [drm:i915_gem_idle] *ERROR* hardware wedged May 26 22:23:46 oscar-desktop init: tty4 main process (780) killed by TERM signal May 26 22:23:46 oscar-desktop init: tty5 main process (784) killed by TERM signal May 26 22:23:46 oscar-desktop init: tty2 main process (796) killed by TERM signal May 26 22:23:46 oscar-desktop init: tty3 main process (797) killed by TERM signal May 26 22:23:46 oscar-desktop init: tty6 main process (799) killed by TERM signal May 26 22:23:46 oscar-desktop init: cron main process (804) killed by TERM signal May 26 22:23:46 oscar-desktop init: tty1 main process (1042) killed by TERM signal May 26 22:23:46 oscar-desktop kernel: Kernel logging (proc) stopped. kernel log May 26 22:19:49 oscar-desktop AptDaemon: INFO: Quiting due to inactivity May 26 22:19:49 oscar-desktop AptDaemon: INFO: Shutdown was requested May 26 22:23:22 oscar-desktop kernel: [ 675.760017] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung May 26 22:23:22 oscar-desktop kernel: [ 675.760037] render error detected, EIR: 0x00000000 May 26 22:23:22 oscar-desktop kernel: [ 675.760330] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 223922 at 223920) May 26 22:23:24 oscar-desktop kernel: [ 678.188017] [drm:i915_gem_idle] *ERROR* hardware wedged May 26 22:23:38 oscar-desktop pulseaudio[1517]: pid.c: Stale PID file, overwriting. May 26 22:23:39 oscar-desktop acpid: client 789[0:0] has disconnected May 26 22:23:39 oscar-desktop acpid: client connected from 1527[0:0] May 26 22:23:39 oscar-desktop acpid: 1 client rule loaded May 26 22:23:39 oscar-desktop pulseaudio[1517]: main.c: Unable to contact D-Bus: org.freedesktop.DBus.Error.NoServer: Failed to connect to socket /tmp/dbus-o2PLsFtVCb: Conexión rechazada May 26 22:23:40 oscar-desktop kernel: [ 693.788342] [drm:i915_gem_entervt_ioctl] *ERROR* Reenabling wedged hardware, good luck May 26 22:23:40 oscar-desktop kernel: [ 694.120014] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung May 26 22:23:40 oscar-desktop kernel: [ 694.120025] render error detected, EIR: 0x00000000 May 26 22:23:40 oscar-desktop kernel: [ 694.120938] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 223926 at 223920) May 26 22:23:41 oscar-desktop bonobo-activation-server (oscar-1535): could not associate with desktop session: Failed to connect to socket /tmp/dbus-o2PLsFtVCb: Conexión rechazada May 26 22:23:42 oscar-desktop kernel: [ 696.216016] [drm:i915_gem_idle] *ERROR* hardware wedged May 26 22:23:43 oscar-desktop acpid: client 1527[0:0] has disconnected May 26 22:23:43 oscar-desktop acpid: client connected from 1544[0:0] May 26 22:23:43 oscar-desktop acpid: 1 client rule loaded May 26 22:23:44 oscar-desktop kernel: [ 697.358138] [drm:i915_gem_entervt_ioctl] *ERROR* Reenabling wedged hardware, good luck May 26 22:23:44 oscar-desktop kernel: [ 697.692013] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung May 26 22:23:44 oscar-desktop kernel: [ 697.692024] render error detected, EIR: 0x00000000 May 26 22:23:44 oscar-desktop kernel: [ 697.692935] [drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 223928 at 223920) May 26 22:23:46 oscar-desktop kernel: [ 699.752014] [drm:i915_gem_idle] *ERROR* hardware wedged May 26 22:23:46 oscar-desktop init: tty4 main process (780) killed by TERM signal May 26 22:23:46 oscar-desktop init: tty5 main process (784) killed by TERM signal May 26 22:23:46 oscar-desktop init: tty2 main process (796) killed by TERM signal May 26 22:23:46 oscar-desktop init: tty3 main process (797) killed by TERM signal May 26 22:23:46 oscar-desktop init: tty6 main process (799) killed by TERM signal May 26 22:23:46 oscar-desktop init: cron main process (804) killed by TERM signal May 26 22:23:46 oscar-desktop init: tty1 main process (1042) killed by TERM signal May 26 22:23:46 oscar-desktop kernel: Kernel logging (proc) stopped.