compiz crashed with SIGSEGV in calloc()

[giacomo festa]

Ubuntu 12.04 beta 1 italian, compiz has crashed by setting the desktop cube and disabling desktop wall

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: libnux-2.0-0 2.6.0-0ubuntu1
Uname: Linux 3.3.0-030300-generic x86_64
ApportVersion: 1.94.1-0ubuntu2
Architecture: amd64
CrashCounter: 1
Date: Tue Mar 20 13:34:26 2012
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120309)
ProcCmdline: compiz
ProcEnviron:
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7f4ffe7b76d3: cmp %rcx,0x8(%rax)
 PC (0x7f4ffe7b76d3) ok
 source "%rcx" ok
 destination "0x8(%rax)" (0x22000060002990c) not located in a known VMA region (needed writable region)!
SegvReason: writing unknown VMA
Signal: 11
SourcePackage: nux
StacktraceTop:
 ?? () from /lib/x86_64-linux-gnu/libc.so.6
 calloc () from /lib/x86_64-linux-gnu/libc.so.6
 XOpenDisplay () from /usr/lib/x86_64-linux-gnu/libX11.so.6
 nux::WindowThread::ThreadCtor(_XDisplay*, unsigned long, __GLXcontextRec*) () from /usr/lib/libnux-2.0.so.0
 nux::CreateFromForeignWindow(unsigned long, __GLXcontextRec*, void (*)(nux::NThread*, void*), void*) () from /usr/lib/libnux-2.0.so.0
Title: compiz crashed with SIGSEGV in calloc()
UpgradeStatus: Upgraded to precise on 2012-03-20 (0 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #947844, 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.