--- xfce4-power-manager-0.8.4.2/src/xfpm-brightness-widget.c	2009-11-20 08:25:01.000000000 +0100
+++ Downloads/xfce4-power-manager-0.8.4.2/src/xfpm-brightness-widget.c	2010-02-09 10:48:46.000000000 +0100
@@ -224,6 +224,8 @@
 	widget->priv->n = NULL;
     }
     
+    widget->priv->destroy_id = 0;
+    
     return FALSE;
 }
 
@@ -272,9 +274,15 @@
     
     if ( g_signal_handler_is_connected (G_OBJECT (widget->priv->monitor), widget->priv->sig_1) )
 	g_signal_handler_disconnect (G_OBJECT (widget->priv->monitor), widget->priv->sig_1);
-	
-    xfpm_brightness_widget_destroy (widget);
+
+    if ( widget->priv->destroy_id != 0 )
+    {
+	g_source_remove (widget->priv->destroy_id);
+	widget->priv->destroy_id = 0;
+    }
     
+    xfpm_brightness_widget_destroy (widget);
+        
     g_object_unref (widget->priv->monitor);
 
     G_OBJECT_CLASS (xfpm_brightness_widget_parent_class)->finalize (object);