Receiving gdm-simple-slave GLib-GObject-CRITICAL: g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed error

Issue

• Number of errors related to gdm/gnome are reported in syslog files. placed by '******'.

• It is noticed that the login window goes a little wonky (shakes around, etc.) on failed login attempts. Is this related?

Mar 20 12:53:10 ****** pam: gdm-password[22080]: pam_unix(gdm-password:auth): conversation failed
Mar 20 12:53:10 ****** pam: gdm-password[22080]: pam_unix(gdm-password:auth): auth could not identify password for []
Mar 20 12:53:10 ****** pam: gdm-password[22080]: pam_succeed_if(gdm-password:auth): error retrieving information about user
Mar 20 12:53:10 ****** pam: gdm-password[22080]: gkr-pam: error looking up user information for: 
Mar 20 12:53:51 ****** pam: gdm-password[22325]: pam_unix(gdm-password:session): session opened for user ****** by (uid=0)
Mar 20 12:53:51 ****** gnome-keyring-daemon[22331]: Couldn't unlock login keyring with provided password
Mar 20 12:53:51 ****** gnome-keyring-daemon[22331]: Failed to unlock login on startup
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-WARNING: invalid (NULL) pointer instance
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-CRITICAL: g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-WARNING: invalid (NULL) pointer instance
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-CRITICAL: g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-WARNING: invalid (NULL) pointer instance
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-CRITICAL: g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-WARNING: invalid (NULL) pointer instance
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-CRITICAL: g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-WARNING: invalid (NULL) pointer instance
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-CRITICAL: g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-WARNING: invalid (NULL) pointer instance
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-CRITICAL: g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-WARNING: invalid (NULL) pointer instance
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-CRITICAL: g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-WARNING: invalid (NULL) pointer instance
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-CRITICAL: g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-WARNING: invalid (NULL) pointer instance
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-CRITICAL: g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-WARNING: invalid (NULL) pointer instance
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-CRITICAL: g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-WARNING: invalid (NULL) pointer instance
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-CRITICAL: g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-WARNING: invalid (NULL) pointer instance
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-CRITICAL: g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-WARNING: invalid (NULL) pointer instance
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-CRITICAL: g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-WARNING: invalid (NULL) pointer instance
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-CRITICAL: g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-WARNING: invalid (NULL) pointer instance
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-CRITICAL: g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-WARNING: invalid (NULL) pointer instance
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-CRITICAL: g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-WARNING: invalid (NULL) pointer instance
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-CRITICAL: g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-WARNING: invalid (NULL) pointer instance
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-CRITICAL: g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-WARNING: invalid (NULL) pointer instance
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-CRITICAL: g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-WARNING: invalid (NULL) pointer instance
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-CRITICAL: g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-WARNING: invalid (NULL) pointer instance
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-CRITICAL: g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-WARNING: invalid (NULL) pointer instance
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-CRITICAL: g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-WARNING: invalid (NULL) pointer instance
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-CRITICAL: g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-WARNING: invalid (NULL) pointer instance
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-CRITICAL: g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-WARNING: invalid (NULL) pointer instance
Mar 20 12:53:52 ****** gdm-simple-slave[22001]: GLib-GObject-CRITICAL: g_signal_handlers_disconnect_matched: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed