(gnome-settings-daemon:2553): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed (gnome-settings-daemon:2553): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed (polkit-gnome-authentication-agent-1:2607): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed (nautilus:2587): Eel-CRITICAL **: eel_preferences_get_boolean: assertion `preferences_is_initialized ()' failed (gnome-panel:2583): Gtk-WARNING **: gtk_widget_size_allocate(): attempt to allocate widget with width -15 and height 25 (gnome-panel:2583): Gdk-WARNING **: /build/buildd/gtk+2.0-2.18.3/gdk/x11/gdkdrawable-x11.c:952 drawable is not a pixmap or window