nautilus crashed with SIGABRT in raise()

[Usama]

i got an error

ProblemType: Crash
DistroRelease: Ubuntu 12.10
Package: nautilus 1:3.5.90.really.3.4.2-0ubuntu2
ProcVersionSignature: Ubuntu 3.5.0-15.23-generic 3.5.4
Uname: Linux 3.5.0-15-generic i686
ApportVersion: 2.5.2-0ubuntu4
Architecture: i386
Date: Fri Nov 16 15:33:45 2012
ExecutablePath: /usr/bin/nautilus
GsettingsChanges:
 b'org.gnome.nautilus.window-state' b'geometry' b"'800x550+0+27'"
 b'org.gnome.nautilus.window-state' b'maximized' b'true'
InstallationMedia: Kubuntu 12.04.1 LTS "Precise Pangolin" - Release i386 (20120820.1)
ProcCmdline: nautilus -n
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
Signal: 6
SourcePackage: nautilus
StacktraceTop:
 raise () from /lib/i386-linux-gnu/libc.so.6
 abort () from /lib/i386-linux-gnu/libc.so.6
 ?? () from /lib/i386-linux-gnu/libc.so.6
 __assert_fail () from /lib/i386-linux-gnu/libc.so.6
 _XAllocID () from /usr/lib/i386-linux-gnu/libX11.so.6
Title: nautilus crashed with SIGABRT in raise()
UpgradeStatus: Upgraded to quantal on 2012-11-13 (2 days ago)
UserGroups: adm lpadmin plugdev root sambashare sudo
usr_lib_nautilus:
 brasero 3.4.1-0ubuntu2
 evince 3.6.0-0ubuntu1
 file-roller 3.6.0-0ubuntu1
 totem 3.4.3-0ubuntu4

[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 #905686, 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.