Xorg assert failure: *** glibc detected *** /usr/bin/X: double free or corruption (!prev): 0x0b30e810 ***

[leonk.chef]

The unity toolbar is very groggy and also lags a lot. the toolbar closes very soon

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: xserver-xorg-core 2:1.9.99.901+git20110131.be3be758-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-1.28-generic 2.6.38-rc2
Uname: Linux 2.6.38-1-generic i686
Architecture: i386
AssertionMessage: *** glibc detected *** /usr/bin/X: double free or corruption (!prev): 0x0b30e810 ***
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.HDMI.A.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
DRM.card0.LVDS.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1366x768
 edid-base64: AP///////wANr2EUAAAAACkSAQOAHxF4Clnlk1xZkyccUFQAAAABAQEBAQEBAQEBAQEBAQEBEhtWZlAAFDAQIiYANa4QAAAYAAAA/gBOMTQwQjYtTDAyCiAgAAAA/gBDTU8KICAgICAgICAgAAAA/gBOMTQwQjYtTDAyCiAgAHE=
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
Date: Wed Feb 2 19:22:35 2011
DistUpgraded: Yes, recently upgraded Log time: 2011-02-02 13:45:59.444578
DistroCodename: natty
DistroVariant: ubuntu
DkmsStatus: synaptics, 1.1.1, 2.6.35-25-generic, i686: installed
ExecutablePath: /usr/bin/Xorg
GraphicsCard:
 Subsystem: Hewlett-Packard Company Device [103c:1526]
   Subsystem: Hewlett-Packard Company Device [103c:1526]
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
MachineType: Hewlett-Packard Compaq 420
ProcCmdline: /usr/bin/X :0 -nr -verbose -auth /var/run/gdm/auth-for-gdm-WGNQcm/database -nolisten tcp vt7
ProcEnviron:
 LANG=en_IN
 PATH=(custom, no user)
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-1-generic root=UUID=0fc45b0d-f754-4510-936f-11586e55b5c3 ro quiet splash vt.handoff=7
ProcKernelCmdLine_: BOOT_IMAGE=/boot/vmlinuz-2.6.38-1-generic root=UUID=0fc45b0d-f754-4510-936f-11586e55b5c3 ro quiet splash vt.handoff=7
Signal: 6
SourcePackage: xorg-server
StacktraceTop:
 __kernel_vsyscall ()
 raise () from /lib/libc.so.6
 abort () from /lib/libc.so.6
 ?? () from /lib/libc.so.6
 ?? () from /lib/libc.so.6
Title: Xorg assert failure: *** glibc detected *** /usr/bin/X: double free or corruption (!prev): 0x0b30e810 ***
UserGroups:

dmi.bios.date: 09/06/2010
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68PVI Ver. F.06
dmi.board.name: 1526
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 71.0D
dmi.chassis.asset.tag: CNU0383G2M
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr68PVIVer.F.06:bd09/06/2010:svnHewlett-Packard:pnCompaq420:pvrF.06:rvnHewlett-Packard:rn1526:rvrKBCVersion71.0D:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: Compaq 420
dmi.product.version: F.06
dmi.sys.vendor: Hewlett-Packard
version.libdrm2: libdrm2 2.4.23-1ubuntu3
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10-1ubuntu1
version.xserver-xorg: xserver-xorg 1:7.6~3ubuntu1
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 2:2.14.0-1ubuntu5
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu4

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #711422, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.