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

[Ram Vijapurapu]

Binary package hint: unity

When you try to configure the Compiz you get an error and the Unity desktop crashes - you would have to switch to console and then restart gdm to fix it.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: unity 3.6.4-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-6.34-generic 2.6.38-rc7
Uname: Linux 2.6.38-6-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
CrashCounter: 1
Date: Wed Mar 16 20:50:44 2011
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
ProcCmdline: compiz
ProcEnviron:
 LANGUAGE=en_NZ:en
 LANG=en_NZ.UTF-8
 SHELL=/usr/bin/zsh
SegvAnalysis:
 Segfault happened at: 0x7fad3bbe12f6 <_ZNK4sigc11signal_base4implEv+22>: mov 0x8(%rdi),%rbx
 PC (0x7fad3bbe12f6) 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 2011-03-16 (0 days ago)
UserGroups: adm admin audio cdrom dialout dip fax floppy fuse lpadmin netdev plugdev root sambashare tape vboxusers video
XsessionErrors:
 (gnome-panel:22441): GConf-WARNING **: Directory `/apps/panel/toplevels/bottom_panel_screen1/screen' was not being monitored by GConfClient 0x21614c0
 (gnome-panel:22441): GConf-WARNING **: Directory `/apps/panel/toplevels/top_panel_screen1/screen' was not being monitored by GConfClient 0x21614c0
 (nautilus:22434): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed