compiz crashed with SIGSEGV in nux::Memcpy()

[Barry Drake]

Testing Natty (today's build). This problem did not occur on first launch, although GSettings Data crashed. On re-booting, Compiz crashed at start leaving me with no menus other than two on the desktop.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: libnux-0.9-0 0.9.34-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-7.36-generic 2.6.38
Uname: Linux 2.6.38-7-generic i686
Architecture: i386
Date: Sun Mar 20 16:58:36 2011
ExecutablePath: /usr/bin/compiz
LiveMediaBuild: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110320)
ProcCmdline: compiz
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0xef15c6: rep movsl %ds:(%esi),%es:(%edi)
 PC (0x00ef15c6) ok
 source "%ds:(%esi)" (0x0000007b) not located in a known VMA region (needed readable region)!
 destination "%es:(%edi)" (0x9bf13083) ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: nux
StacktraceTop:
 ?? () from /lib/i386-linux-gnu/libc.so.6
 ?? ()
 nux::Memcpy(void*, void const*, unsigned int) () from /usr/lib/libnux-core-0.9.so.0
 nux::CairoGraphics::GetBitmap() () from /usr/lib/libnux-image-0.9.so.0
 PanelMenuView::Refresh() () from /usr/lib/compiz/libunityshell.so
Title: compiz crashed with SIGSEGV in nux::Memcpy()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
XsessionErrors:
 (nautilus:5028): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed
 (<unknown>:5026): libindicator-WARNING **: Shortcut Group does not have key 'TargetEnvironment' falling back to deprecated use of 'OnlyShowIn' and 'NotShowIn'.
 (nautilus:5028): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed
 (nautilus:5028): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed

[Apport retracing service (apport)]

StacktraceTop:
 __memcpy_ia32 () at ../sysdeps/i386/i686/multiarch/../memcpy.S:75
 ?? ()
 nux::Memcpy (Dest=0x9bf13008, Src=0x0, Count=13389896) at /usr/include/bits/string3.h:52
 nux::CairoGraphics::GetBitmap (this=0xbfb1b318) at ./CairoGraphics.cpp:155
 PanelMenuView::Refresh (this=0x9934400) at /build/buildd/unity-3.6.6/src/PanelMenuView.cpp:543