gnome-session crashed with SIGSEGV in g_variant_unref()

[salvam]

:(

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: gnome-session-bin 3.1.5-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-9.14-generic 3.0.3
Uname: Linux 3.0.0-9-generic i686
Architecture: i386
Date: Fri Aug 26 22:47:10 2011
ExecutablePath: /usr/bin/gnome-session
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Alpha i386 (20100803.1)
ProcCmdline: /usr/bin/gnome-session --session gdm --autostart=/usr/share/gdm/autostart/LoginWindow/
ProcEnviron:
 LANG=it_IT.UTF-8
 SHELL=/bin/false
 PATH=(custom, no user)
SegvAnalysis:
 Segfault happened at: 0xc87c13 <g_variant_unref+35>: lock xadd %eax,0x14(%esi)
 PC (0x00c87c13) ok
 source "%eax" ok
 destination "0x14(%esi)" (0x00000014) not located in a known VMA region (needed writable region)!
SegvReason: writing NULL VMA
Signal: 11
SourcePackage: gnome-session
StacktraceTop:
 g_variant_unref () from /lib/i386-linux-gnu/libglib-2.0.so.0
 g_settings_get_boolean () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
 ?? ()
 ?? ()
 ?? ()
Title: gnome-session crashed with SIGSEGV in g_variant_unref()
UpgradeStatus: Upgraded to oneiric on 2011-08-26 (0 days ago)
UserGroups:

XsessionErrors:
 (polkit-gnome-authentication-agent-1:7401): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
 (nautilus:7398): GConf-CRITICAL **: gconf_value_free: assertion `value != NULL' failed
 (users-admin:7541): Liboobs-WARNING **: There was an unknown error communicating asynchronously with the backends: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
 (nautilus:7398): Eel-WARNING **: "unique eel_ref_str" hash table still has 3 elements at quit time (keys above)
 (nautilus:7398): Eel-WARNING **: "nautilus-directory.c: directories" hash table still has 3 elements at quit time

[Apport retracing service (apport)]

StacktraceTop:
 g_variant_unref (value=0x0) at /build/buildd/glib2.0-2.29.16/./glib/gvariant-core.c:617
 g_settings_get_boolean (settings=0x99a3590, key=0x8077e72 "disable-log-out") at /build/buildd/glib2.0-2.29.16/./gio/gsettings.c:1988
 _log_out_is_locked_down (manager=0x99db800) at gsm-manager.c:3325
 gsm_manager_logout (manager=0x99db800, logout_mode=2, error=0x0) at gsm-manager.c:3462
 signal_cb (signo=15, data=0x99db800) at main.c:181