compiz crashed with SIGSEGV in sigc::signal_base::impl()

[Pieter]

Binary package hint: unity

Was busy in the compiz settings, selected screen shot cam.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: unity 3.8.4-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-8.41-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
NonfreeKernelModules: fglrx
Architecture: amd64
CrashCounter: 1
Date: Sun Apr 10 09:58:22 2011
EcryptfsInUse: Yes
ExecutablePath: /usr/bin/compiz
ProcCmdline: compiz
ProcEnviron:
 LANGUAGE=en_ZA:en
 PATH=(custom, user)
 LANG=en_ZA.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7fbe948082f6 <_ZNK4sigc11signal_base4implEv+22>: mov 0x8(%rdi),%rbx
 PC (0x7fbe948082f6) ok
 source "0x8(%rdi)" (0x000000e8) not located in a known VMA region (needed readable region)!
 destination "%rbx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 sigc::signal_base::impl() const () from /usr/lib/libsigc-2.0.so.0
 sigc::signal_base::connect(sigc::slot_base const&) () from /usr/lib/libsigc-2.0.so.0
 UnityScreen::UnityScreen(CompScreen*) () from /usr/lib/compiz/libunityshell.so
 CompPlugin::VTableForScreenAndWindow<UnityScreen, UnityWindow>::initScreen(CompScreen*) () from /usr/lib/compiz/libunityshell.so
 CompManager::initPlugin(CompPlugin*) ()
Title: compiz crashed with SIGSEGV in sigc::signal_base::impl()
UpgradeStatus: Upgraded to natty on 2011-04-09 (0 days ago)
UserGroups: adm admin audio cdrom dialout dip freerad fuse libvirtd lpadmin netdev plugdev sambashare vboxusers video

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #754202, 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.