nautilus crashed with SIGSEGV in ffi_call()

[mario catena]

when i try to move a file to a folder download nautilus crashed!
installation on partition

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: nautilus 1:3.1.3-0ubuntu1
ProcVersionSignature: Ubuntu 3.0-2.3-generic 3.0.0-rc4
Uname: Linux 3.0-2-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Fri Jul 8 20:55:17 2011
ExecutablePath: /usr/bin/nautilus
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha amd64 (20110531.1)
ProcCmdline: nautilus -n
ProcEnviron:
 PATH=(custom, no user)
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x7fb819326a76: mov (%rsi),%rcx
 PC (0x7fb819326a76) ok
 source "(%rsi)" (0x00000000) not located in a known VMA region (needed readable region)!
 destination "%rcx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: nautilus
StacktraceTop:
 ?? () from /lib/x86_64-linux-gnu/libc.so.6
 ffi_call () from /usr/lib/x86_64-linux-gnu/libffi.so.6
 g_cclosure_marshal_generic () from /usr/lib/x86_64-linux-gnu/libgobject-2.0.so.0
 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
Title: nautilus crashed with SIGSEGV in ffi_call()
UpgradeStatus: Upgraded to oneiric on 2011-07-08 (0 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.