mission-control-5 crashed with SIGSEGV in d_pending_call_notify()

This occured after start of Empathy.
Dual monitors were active.
During crash were running those apps: Chromium, Eclipse (two instances)

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: telepathy-mission-control-5 1:5.12.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-22.35-generic 3.2.14
Uname: Linux 3.2.0-22-generic x86_64
ApportVersion: 2.0-0ubuntu4
Architecture: amd64
CrashCounter: 1
Date: Sun Apr 8 20:57:44 2012
ExecutablePath: /usr/lib/telepathy/mission-control-5
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120328)
ProcCmdline: BOOT_IMAGE=/boot/vmlinuz-3.2.0-22-generic root=UUID=d503f9c2-1d05-48f3-b835-e0acbae4ecca ro quiet splash vt.handoff=7
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, no user)
 LANG=cs_CZ.UTF-8
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: telepathy-mission-control-5
Title: mission-control-5 crashed with SIGSEGV in dbus_connection_dispatch()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo