Same results for me. This is a security issue since it allows an unauthorized user with physical access to log into a sensitive account without a password.
In my case, the 2nd user is not guest, but another user with a password. I'm using gdm and gnome-shell session. Ubuntu 3.5.0-21.32-generic 3.5.7.1 gnome-screensaver 3.6.0-0ubuntu2 upgraded to quantal on 2013-01-10 (7 days ago) = from dmsg: = [177116.024201] gnome-shell[31699]: segfault at 18 ip 00007f63b1b32589 sp 00007fff9c944778 error 4 in libgio-2.0.so.0.3400.1[\ 7f63b1afd000+14e000] [180247.845478] gdm-session-wor[29009]: segfault at c4 ip 00007fa5c640a440 sp 00007fff47482e28 error 4 in libaccountsservice.\ so.0.0.0[7fa5c63f5000+3d000] [180277.554761] gnome-shell[27368]: segfault at 0 ip 00007fc894473589 sp 00007fffe496b318 error 4 in libgio-2.0.so.0.3400.1[7\ fc89443e000+14e000] = from syslog: = Jan 17 07:54:32 workstation gnome-session[29039]: CRITICAL: gsm_manager_set_phase: assertion `GSM_IS_MANAGER (manager)' faile\ d Jan 17 07:54:32 workstation gnome-session[29039]: Gtk-CRITICAL: gtk_main_quit: assertion `main_loops != NULL' failed Jan 17 07:54:32 workstation goa[29335]: goa-daemon version 3.6.0 exiting [main.c:154, main()] Jan 17 07:54:33 workstation acpid: client 1736[0:0] has disconnected Jan 17 07:54:33 workstation acpid: client 28910[0:0] has disconnected Jan 17 07:54:33 workstation acpid: client connected from 1736[0:0] Jan 17 07:54:33 workstation acpid: 1 client rule loaded Jan 17 07:54:33 workstation gdm-simple-slave[28907]: GLib-GIO-CRITICAL: g_dbus_connection_unregister_object: assertion `G_IS_\ DBUS_CONNECTION (connection)' failed Jan 17 07:54:33 workstation gdm-simple-slave[28907]: GLib-GIO-WARNING: (/build/buildd/glib2.0-2.34.1/./gio/gdbusinterfaceskel\ eton.c:739):remove_connection_locked: runtime check failed: (g_dbus_connection_unregister_object (data->connection, data->reg\ istration_id)) Jan 17 07:54:33 workstation gdm-simple-slave[28907]: GLib-GObject-CRITICAL: g_object_unref: assertion `G_IS_OBJECT (object)' \ failed Jan 17 07:54:33 workstation gdm-simple-slave[28907]: GLib-GObject-CRITICAL: g_object_ref: assertion `object->ref_count > 0' f\ ailed Jan 17 07:54:33 workstation gdm-simple-slave[28907]: GLib-GObject-CRITICAL: g_object_unref: assertion `object->ref_count > 0'\ failed Jan 17 07:54:33 workstation kernel: [180277.554761] gnome-shell[27368]: segfault at 0 ip 00007fc894473589 sp 00007fffe496b318\ error 4 in libgio-2.0.so.0.3400.1[7fc89443e000+14e000] Jan 17 07:54:33 workstation gnome-session[2959]: WARNING: Detected that screensaver has left the bus Jan 17 07:54:33 workstation gdm-password][2920]: GLib-GObject-CRITICAL: g_object_unref: assertion `G_IS_OBJECT (object)' fail\ ed Jan 17 07:54:33 workstation gnome-session[2959]: WARNING: Application 'gnome-shell.desktop' killed by signal 11 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1064584 Title: Locked gnome session unlocks without password authentication To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm/+bug/1064584/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
