(gnome-settings-daemon:1606): GLib-CRITICAL **: g_variant_new_string: assertion `string != NULL' failed
(gnome-settings-daemon:1606): GLib-CRITICAL **: g_variant_get_type_string: assertion `value != NULL' failed
(update-manager:2361): Gdk-CRITICAL **: gdk_window_get_pointer: assertion `GDK_IS_WINDOW (window)' failed
(update-manager:2361): Gdk-CRITICAL **: gdk_window_get_pointer: assertion `GDK_IS_WINDOW (window)' failed
(update-manager:2361): Gdk-CRITICAL **: gdk_window_get_pointer: assertion `GDK_IS_WINDOW (window)' failed
(update-manager:2361): Gdk-CRITICAL **: gdk_window_get_pointer: assertion `GDK_IS_WINDOW (window)' failed
(update-manager:2361): Gdk-CRITICAL **: gdk_window_get_pointer: assertion `GDK_IS_WINDOW (window)' failed
(update-manager:2361): Gdk-CRITICAL **: gdk_window_get_pointer: assertion `GDK_IS_WINDOW (window)' failed
(rhythmbox:1903): GLib-CRITICAL **: g_str_has_prefix: assertion `str != NULL' failed
(update-manager:2361): Gtk-WARNING **: Attempting to add a widget with type aptdaemon+gtk3widgets+AptProgressDialog to a GtkWindow, but as a GtkBin subclass a GtkWindow can only contain one widget at a time; it already contains a widget of type GtkVBox
(update-manager:2361): Gdk-CRITICAL **: gdk_window_get_pointer: assertion `GDK_IS_WINDOW (window)' failed
(update-manager:2361): Gdk-CRITICAL **: gdk_window_get_pointer: assertion `GDK_IS_WINDOW (window)' failed