compiz crashed with SIGSEGV in closure_invoke_notifiers()

Binary package hint: compiz

was trying to move a terminal to a new workspace with CTRL+ALT+SHIFT+DownArrow, and repeatedly got a crash.

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: compiz-core 1:0.9.4git20110322-0ubuntu5
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38
Uname: Linux 2.6.38-7-generic x86_64
Architecture: amd64
CrashCounter: 1
Date: Fri Apr 1 10:34:46 2011
DistroCodename: natty
DistroVariant: ubuntu
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Release Candidate amd64 (20100419.1)
InstallationMedia_: Ubuntu 10.04 "Lucid Lynx" - Release Candidate amd64 (20100419.1)
ProcCmdline: compiz
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature_: Ubuntu 2.6.38-7.39-generic 2.6.38
SegvAnalysis:
 Segfault happened at: 0x7f4451d59848 <g_closure_invoke+392>: mov (%rax),%rdi
 PC (0x7f4451d59848) ok
 source "(%rax)" (0xffffff0100001f) not located in a known VMA region (needed readable region)!
 destination "%rdi" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: compiz
StacktraceTop:
 closure_invoke_notifiers (closure=0x1000000, return_value=0x0, n_param_values=4, param_values=0x169f9e0, invocation_hint=0x7fff5dd17ba0) at /build/buildd/glib2.0-2.28.4/./gobject/gclosure.c:289
 g_closure_invoke (closure=0x1000000, return_value=0x0, n_param_values=4, param_values=0x169f9e0, invocation_hint=0x7fff5dd17ba0) at /build/buildd/glib2.0-2.28.4/./gobject/gclosure.c:773
 signal_emit_unlocked_R (node=<value optimized out>, detail=0, instance=0x6f7ab0, emission_return=0x0, instance_and_params=0x169f9e0) at /build/buildd/glib2.0-2.28.4/./gobject/gsignal.c:3252
 g_signal_emit_valist (instance=<value optimized out>, signal_id=<value optimized out>, detail=<value optimized out>, var_args=<value optimized out>) at /build/buildd/glib2.0-2.28.4/./gobject/gsignal.c:2983
 g_signal_emit (instance=<value optimized out>, signal_id=<value optimized out>, detail=<value optimized out>) at /build/buildd/glib2.0-2.28.4/./gobject/gsignal.c:3040
Title: compiz crashed with SIGSEGV in closure_invoke_notifiers()
UpgradeStatus: Upgraded to natty on 2011-04-01 (0 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.1-0ubuntu3
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu1