nautilus crashed with SIGSEGV

[Andreas]

this happens quite frequently and at random time points.

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: nautilus 1:3.2.0-0ubuntu5
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
NonfreeKernelModules: nvidia wl
ApportVersion: 1.23-0ubuntu2
Architecture: amd64
CrashCounter: 1
Date: Sun Oct 9 14:04:24 2011
Disassembly: => 0x7fef0d8ca8be: Cannot access memory at address 0x7fef0d8ca8be
ExecutablePath: /usr/bin/nautilus
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
ProcCmdline: nautilus -n
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7fef0d8ca8be: Cannot access memory at address 0x7fef0d8ca8be
 PC (0x7fef0d8ca8be) ok
 SP (0x7fffe020ac60) ok
 Reason could not be automatically determined.
Signal: 11
SourcePackage: nautilus
StacktraceTop:
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Title: nautilus crashed with SIGSEGV
UpgradeStatus: Upgraded to oneiric on 2011-09-23 (16 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
XsessionErrors:
 (gnome-settings-daemon:2085): GLib-CRITICAL **: g_variant_new_string: assertion `string != NULL' failed
 (gnome-settings-daemon:2085): GLib-CRITICAL **: g_variant_get_type_string: assertion `value != NULL' failed
 (nautilus:2134): Gtk-CRITICAL **: gtk_action_set_visible: assertion `GTK_IS_ACTION (action)' failed
 (nautilus:2134): Gtk-CRITICAL **: gtk_action_set_visible: assertion `GTK_IS_ACTION (action)' failed