nautilus crashed with SIGSEGV in g_type_check_instance_cast()

[paraiko]

This suddenly happened to me while software updater was running.
I have no clue what caused it.

I've opened a new bug report because all the other similar ones seem to be filed againts older ubuntu versions.
Ubuntu version = 12.10
nautilus version = 1:3.5.90.really.3.4.2-0ubuntu2

ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: nautilus 1:3.5.90.really.3.4.2-0ubuntu2
ProcVersionSignature: Ubuntu 3.5.0-15.22-generic 3.5.4
Uname: Linux 3.5.0-15-generic x86_64
ApportVersion: 2.5.2-0ubuntu4
Architecture: amd64
Date: Mon Sep 24 08:13:45 2012
ExecutablePath: /usr/bin/nautilus
GsettingsChanges:
 b'org.gnome.nautilus.window-state' b'geometry' b"'1252x679+0+24'"
 b'org.gnome.nautilus.window-state' b'sidebar-width' b'214'
 b'org.gnome.nautilus.window-state' b'start-with-status-bar' b'true'
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120328)
ProcCmdline: nautilus -n
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7fcbb7f54e8c <g_type_check_instance_cast+28>: mov (%rax),%rbp
 PC (0x7fcbb7f54e8c) ok
 source "(%rax)" (0x2e0000000d1) not located in a known VMA region (needed readable region)!
 destination "%rbp" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: nautilus
StacktraceTop:
 g_type_check_instance_cast () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libdbusmenu-gtk3.so.4
 g_closure_invoke () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 ?? () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 g_signal_emit_valist () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
Title: nautilus crashed with SIGSEGV in g_type_check_instance_cast()
UpgradeStatus: Upgraded to quantal on 2012-09-12 (12 days ago)
UserGroups: adm cdrom dip lp lpadmin plugdev sambashare sudo

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #1053670, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.