compiz crashed with SIGSEGV in nux::CairoGraphics::GetBitmap()

[Hallo32]

Ubuntu 11.04 Alpha3 crashed on boot after User login

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: libnux-0.9-0 0.9.30-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-5.32-generic 2.6.38-rc6
Uname: Linux 2.6.38-5-generic x86_64
Architecture: amd64
Date: Mon Mar 7 15:46:29 2011
ExecutablePath: /usr/bin/compiz
LiveMediaBuild: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110302)
ProcCmdline: compiz
ProcEnviron:
 LANGUAGE=de_DE:en
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7fe881b89366: movdqu -0x10(%rsi),%xmm0
 PC (0x7fe881b89366) ok
 source "-0x10(%rsi)" (0x004a906c) not located in a known VMA region (needed readable region)!
 destination "%xmm0" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: nux
StacktraceTop:
 ?? () from /lib/libc.so.6
 nux::CairoGraphics::GetBitmap() () from /usr/lib/libnux-image-0.9.so.0
 PanelMenuView::Refresh() () from /usr/lib/compiz/libunityshell.so
 PanelMenuView::PostLayoutManagement(long) () from /usr/lib/compiz/libunityshell.so
 nux::View::ComputeChildLayout() () from /usr/lib/libnux-0.9.so.0
Title: compiz crashed with SIGSEGV in nux::CairoGraphics::GetBitmap()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
XsessionErrors: (nautilus:3364): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed

[Apport retracing service (apport)]

StacktraceTop:
 __memcpy_ssse3_back () at ../sysdeps/x86_64/multiarch/memcpy-ssse3-back.S:1673
 nux::CairoGraphics::GetBitmap (this=0x7fff57cf7b00) at ./CairoGraphics.cpp:155
 PlacesView::~PlacesView (this=0x7fe85d4a108c, __in_chrg=<value optimized out>) at /build/buildd/unity-3.6.2/src/PlacesView.cpp:112
 ?? () from /lib/libc.so.6
 ?? ()