compiz assert failure: *** glibc detected *** compiz: malloc(): smallbin double linked list corrupted: 0x093bbb18 ***

Shown by apport

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: compiz-core 1:0.9.4+bzr20110606-0ubuntu1~natty2
ProcVersionSignature: Ubuntu 2.6.38-10.46-generic-pae 2.6.38.7
Uname: Linux 2.6.38-10-generic-pae i686
NonfreeKernelModules: wl fglrx
Architecture: i386
AssertionMessage: *** glibc detected *** compiz: malloc(): smallbin double linked list corrupted: 0x093bbb18 ***
CompizPlugins: [core,bailer,detection,composite,opengl,decor,vpswitch,grid,regex,move,compiztoolbox,animation,resize,gnomecompat,mousepoll,place,imgpng,session,workarounds,wall,unitymtgrabhandles,wobbly,expo,ezoom,staticswitcher,switcher,fade,scale,unityshell]
CompositorRunning: compiz
Date: Thu Jul 14 19:09:11 2011
DistUpgraded: Log time: 2011-05-24 17:52:20.523243
DistroCodename: natty
DistroVariant: ubuntu
ExecutablePath: /usr/bin/compiz
GraphicsCard:
 ATI Technologies Inc Mobility Radeon HD 3400 Series [1002:95c4] (prog-if 00 [VGA controller])
   Subsystem: Dell Device [1028:0254]
JockeyStatus:
 kmod:wl - Broadcom-STA-WLAN-Treiber (Proprietär, Aktiviert, In Benutzung) [auto-install]
 xorg:fglrx - Proprietärer FGLRX-Grafiktreiber von ATI/AMD (Proprietär, Aktiviert, In Benutzung)
MachineType: Dell Inc. Studio 1535
ProcCmdline: compiz
ProcEnviron:
 LANGUAGE=de_DE:en
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: root=UUID=3f9a6446-eac6-4000-a7e6-90f93268f43e ro quiet splash
ProcVersionSignature_: Ubuntu 2.6.38-10.46-generic-pae 2.6.38.7
Renderer: Unknown
Signal: 6
SourcePackage: compiz
StacktraceTop:
 __kernel_vsyscall ()
 raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
 abort () at abort.c:92
 __libc_message (do_abort=2, fmt=0xb71048ac "*** glibc detected *** %s: %s: 0x%s ***\n") at ../sysdeps/unix/sysv/linux/libc_fatal.c:189
 malloc_printerr (action=<value optimized out>, str=<value optimized out>, ptr=0x93bbb18) at malloc.c:6283
Title: compiz assert failure: *** glibc detected *** compiz: malloc(): smallbin double linked list corrupted: 0x093bbb18 ***
UpgradeStatus: Upgraded to natty on 2011-05-24 (51 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare vboxusers
dmi.bios.date: 12/04/2008
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A06
dmi.board.name: 0F700C
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA06:bd12/04/2008:svnDellInc.:pnStudio1535:pvr:rvnDellInc.:rn0F700C:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Studio 1535
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.4+bzr20110606-0ubuntu1~natty2
version.fglrx-installer: fglrx-installer N/A
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu2
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3.1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4.1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu7