compiz crashed with SIGSEGV in free()

Binary package hint: compiz

Was simply trying to do a ctl/alt arrow to switch workplace..got this message

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: compiz-core 1:0.9.4git20110322-0ubuntu5
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38
Uname: Linux 2.6.38-7-generic x86_64
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,staticswitcher,resize,fade,unitymtgrabhandles,scale,session,unityshell]
CompositorRunning: compiz
CrashCounter: 1
DRM.card0.DVI.D.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1280x1024 1152x864 1024x768 1024x768 1024x768 1024x768 832x624 800x600 800x600 800x600 800x600 800x600 640x480 640x480 640x480 640x480 640x480 720x400
 edid-base64: AP///////wA0rFhGkxIAABQNAQOAJB147gololdLmSQYUFS/7oAxWUVZYVmBgAEBAQEBAQEBMCoAmFEAKkAwcBMAZx8RAAAeAAAA/QA3VR9QDgAKICAgICAgAAAA/ABOWDg2TENECiAgICAgAAAA/wAzNTEwNDc1NVlBCiAgAKA=
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
Date: Wed Mar 30 11:42:07 2011
DistUpgraded: Log time: 2011-03-22 11:38:09.453587
DistroCodename: natty
DistroVariant: ubuntu
DkmsStatus: virtualbox-ose, 4.0.4, 2.6.38-7-generic, x86_64: installed
ExecutablePath: /usr/bin/compiz
GraphicsCard:
 Intel Corporation 82945G/GZ Integrated Graphics Controller [8086:2772] (rev 02) (prog-if 00 [VGA controller])
   Subsystem: Holco Enterprise Co, Ltd/Shuttle Computer Device [1297:3140]
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release Candidate amd64 (20100928)
InstallationMedia_: Ubuntu 10.10 "Maverick Meerkat" - Release Candidate amd64 (20100928)
MachineType: Shuttle Inc SK48
ProcCmdline: compiz
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-7-generic root=UUID=ef8bd907-e5f7-4317-aebe-ca7915a70e8d ro splash quiet splash vt.handoff=7
ProcVersionSignature_: Ubuntu 2.6.38-7.39-generic 2.6.38
Renderer: Unknown
SegvAnalysis:
 Segfault happened at: 0x7fdbcd7888c3 <free+83>: lock cmpxchg %esi,(%rbx)
 PC (0x7fdbcd7888c3) ok
 source "%esi" ok
 destination "(%rbx)" (0x7fdb8400001f) not located in a known VMA region (needed writable region)!
SegvReason: writing unknown VMA
Signal: 11
SourcePackage: compiz
StacktraceTop:
 free () from /lib/x86_64-linux-gnu/libc.so.6
 ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_variant_unref () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 g_hash_table_unref () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
Title: compiz crashed with SIGSEGV in free()
UpgradeStatus: Upgraded to natty on 2011-03-27 (2 days ago)
UserGroups: adm admin audio cdrom dialout dip fax floppy fuse lpadmin netdev plugdev sambashare tape video
dmi.bios.date: 07/02/2008
dmi.bios.vendor: Phoenix Technologies, LTD
dmi.bios.version: 6.00 PG
dmi.board.name: FM20
dmi.board.vendor: Shuttle Inc
dmi.board.version: V10
dmi.chassis.type: 3
dmi.chassis.vendor: Shuttle Inc
dmi.chassis.version: K
dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvr6.00PG:bd07/02/2008:svnShuttleInc:pnSK48:pvrV10:rvnShuttleInc:rnFM20:rvrV10:cvnShuttleInc:ct3:cvrK:
dmi.product.name: SK48
dmi.product.version: V10
dmi.sys.vendor: Shuttle Inc
version.compiz: compiz 1:0.9.4git20110322-0ubuntu5
version.libdrm2: libdrm2 2.4.23-1ubuntu5
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.1-0ubuntu3
version.xserver-xorg: xserver-xorg 1:7.6~3ubuntu11
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu6