launcher froze, unity-2d-shell crashed with SIGSEGV

[Antti Kuokkanen]

Launcher did not autohide and react. When I continued for perhaps 2 minutes, came report of error in Unity-2D-shell.
ajk@antin-asus:~$ lsb_release -rd
Description: Ubuntu precise (development branch)
Release: 12.04

System installed fresh few days ago. System update done with Synaptic today 17.3.2012 around 9:30 UTC.

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: unity-2d-shell 5.6.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-18.29-generic-pae 3.2.9
Uname: Linux 3.2.0-18-generic-pae i686
ApportVersion: 1.94.1-0ubuntu2
Architecture: i386
Date: Sat Mar 17 10:22:01 2012
Disassembly: => 0xb67a1a25: Cannot access memory at address 0xb67a1a25
ExecutablePath: /usr/bin/unity-2d-shell
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta i386 (20120301)
ProcCmdline: unity-2d-shell
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0xb67a1a25: Cannot access memory at address 0xb67a1a25
 PC (0xb67a1a25) ok
 SP (0xbfecb670) ok
 Reason could not be automatically determined.
Signal: 11
SourcePackage: unity-2d
Stacktrace:
 #0 0xb67a1a25 in ?? ()
 No symbol table info available.
 #1 0x00000000 in ?? ()
 No symbol table info available.
StacktraceTop:
 ?? ()
 ?? ()
Title: unity-2d-shell crashed with SIGSEGV
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

Stacktrace:
 #0 0xb67a1a25 in ?? ()
 No symbol table info available.
 #1 0x00000000 in ?? ()
 No symbol table info available.
StacktraceTop:
 ?? ()
 ?? ()