compiz crashed with SIGSEGV in nux::ROProperty<std::string>::operator std::string()

[Franck]

Happened while I was typing in the search input of unity lens

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: libnux-1.0-0 1.14.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-12.19-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
ApportVersion: 1.23-0ubuntu2
Architecture: amd64
CrashCounter: 1
Date: Thu Oct 6 13:53:44 2011
EcryptfsInUse: Yes
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta amd64 (20110901)
ProcCmdline: compiz
SegvAnalysis:
 Segfault happened at: 0x7f84a0373280: add %al,(%rax)
 PC (0x7f84a0373280) in non-executable VMA region: 0x7f84a0000000-0x7f84a04fd000 rw-p None
 source "%al" ok
 destination "(%rax)" (0x7fff80e0c150) ok
SegvReason: executing writable VMA None
Signal: 11
SourcePackage: nux
StacktraceTop:
 ?? ()
 nux::ROProperty<std::string>::operator std::string() const () from /usr/lib/compiz/libunityshell.so
 unity::dash::ResultViewGrid::OnOnKeyNavFocusChange(nux::Area*) () from /usr/lib/compiz/libunityshell.so
 sigc::internal::signal_emit1<void, nux::Area*, sigc::nil>::emit(sigc::internal::signal_impl*, nux::Area* const&) () from /usr/lib/libnux-1.0.so.0
 nux::WindowCompositor::SetKeyFocusArea(nux::InputArea*) () from /usr/lib/libnux-1.0.so.0
Title: compiz crashed with SIGSEGV in nux::ROProperty<std::string>::operator std::string()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

StacktraceTop:
 ?? ()
 operator() (this=<optimized out>) at /usr/include/sigc++-2.0/sigc++/functors/slot.h:440
 nux::ROProperty<std::string>::operator std::string (this=<optimized out>) at /usr/include/Nux-1.0/NuxCore/Property-inl.h:142
 unity::dash::ResultViewGrid::OnOnKeyNavFocusChange (this=0x2feb3f0, area=<optimized out>) at /build/buildd/unity-4.22.0/plugins/unityshell/src/ResultViewGrid.cpp:497
 sigc::internal::signal_emit1<void, nux::Area*, sigc::nil>::emit (impl=<optimized out>, _A_a1=@0x7fff80e0c220) at /usr/include/sigc++-2.0/sigc++/signal.h:1010