compiz crashed with SIGSEGV in free()

[Vangel Ajanovski]

Binary package hint: compiz

I was opening firefox while at the same time changing themes

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
NonfreeKernelModules: wl
Architecture: amd64
CrashCounter: 1
Date: Mon Apr 4 01:50:29 2011
DistroCodename: natty
DistroVariant: ubuntu
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110202)
InstallationMedia_: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20110202)
ProcCmdline: compiz
ProcEnviron:
 LANGUAGE=mk:en_US:en
 LANG=en_US.UTF-8
 LC_MESSAGES=mk_MK.UTF-8
 SHELL=/bin/bash
ProcVersionSignature_: Ubuntu 2.6.38-7.39-generic 2.6.38
SegvAnalysis:
 Segfault happened at: 0x7f883ad62b42: mov 0x8(%rdx),%rcx
 PC (0x7f883ad62b42) ok
 source "0x8(%rdx)" (0x7f8830339e1008) not located in a known VMA region (needed readable region)!
 destination "%rcx" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: compiz
StacktraceTop:
 ?? () from /lib/x86_64-linux-gnu/libc.so.6
 free () from /lib/x86_64-linux-gnu/libc.so.6
 g_hash_table_unref () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
 g_object_unref () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
Title: compiz crashed with SIGSEGV in free()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lp lpadmin plugdev sambashare saned
XsessionErrors:
 (nautilus:1611): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed
 (<unknown>:1579): dee-WARNING **: Transaction from com.canonical.Unity.ApplicationsPlace.SectionsModel is in the past. Ignoring transaction.
 (<unknown>:1579): dee-WARNING **: Transaction from com.canonical.Unity.ApplicationsPlace.GroupsModel is in the past. Ignoring transaction.
 (<unknown>:1579): dee-WARNING **: Transaction from com.canonical.Unity.ApplicationsPlace.GlobalGroupsModel is in the past. Ignoring transaction.
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.1-0ubuntu3
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu1