[apport] nautilus crashed with SIGSEGV in pthread_mutex_lock()

Binary package hint: nautilus

Ok, this is would be my first bug-report,

I can't access to my folder with .pdf files in it. It keeps loading for some seconds, then it crashes.
This is everytime I want to access that folder.
I even changed the previews in nautilus to none, but it still crashes.
With root permissions it keeps running a bit longer(+5sec?), then it also crashes. Output: Segmentation fault (core dumped)

ProblemType: Crash
Architecture: i386
CrashCounter: 1
Date: Thu Mar 22 17:54:32 2007
DistroRelease: Ubuntu 7.04
ExecutablePath: /usr/bin/nautilus
Package: nautilus 2.18.0.1-0ubuntu1
PackageArchitecture: i386
ProcCmdline: nautilus --no-default-window --sm-client-id default2
ProcCwd: /home/math
ProcEnviron:
 LANGUAGE=nl_NL:nl
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=nl_NL.UTF-8
 SHELL=/bin/bash
Signal: 11
SourcePackage: nautilus
StacktraceTop:
 pthread_mutex_lock ()
 g_signal_emit_valist () from /usr/lib/libgobject-2.0.so.0
 g_signal_emit () from /usr/lib/libgobject-2.0.so.0
 nautilus_file_emit_changed ()
 nautilus_directory_emit_change_signals ()
Uname: Linux amd64 2.6.20-12-generic #2 SMP Wed Mar 21 20:55:46 UTC 2007 i686 GNU/Linux
UserGroups: adm admin audio cdrom dialout dip floppy lpadmin netdev plugdev powerdev scanner video