[Bug 96800] Symbolic threaded stack trace

[Apport retracing service]

** Attachment added: "ThreadStacktrace.txt (retraced)"
   http://librarian.launchpad.net/6992259/%3Cfdopen%3E

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[apport] gnome-panel crashed with SIGSEGV in panel_applet_lockable()
https://launchpad.net/bugs/96800