gnome-shell crashes after empathy's message received

[KEIII]

Sometimes gnome shell crashes after empathy's message received

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: gnome-shell 3.4.1-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-24.38-generic 3.2.16
Uname: Linux 3.2.0-24-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
Date: Thu May 10 16:44:19 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120413)
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)

[KEIII (cashagent)]

terminal output

$ gnome-shell --replace
Window manager warning: Workarounds for broken applications disabled. Some applications may not behave properly.

(gnome-shell:19675): Clutter-CRITICAL **: clutter_actor_insert_child_at_index: assertion `child->priv->parent == NULL' failed
Window manager warning: Log level 16: STACK_OP_REMOVE: window 0x15b not in stack

(gnome-shell:19675): Json-CRITICAL **: json_object_get_string_member: assertion `node != NULL' failed

(gnome-shell:19675): Json-CRITICAL **: json_object_get_string_member: assertion `node != NULL' failed
Window manager warning: CurrentTime used to choose focus window; focus window may not be correct.
Window manager warning: Got a request to focus 0x1632f40 (Books) with a timestamp of 0. This shouldn't happen!
Segmentation fault (core dumped)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Jeremy Bícha (jbicha)]

Thank you for reporting this bug to Ubuntu. Ubuntu 12.04 LTS reached End of Life in April. See this document for currently supported Ubuntu releases: https://wiki.ubuntu.com/Releases

Please upgrade to Ubuntu 16.04 LTS and re-test. If the bug is still reproducible, increase the verbosity of the steps to recreate it so we can try again.

I apologize that we are not always to respond to bug reports promptly. Do feel free to report any other bugs you may find.