--- xfce4-genmon-plugin-3.2~/panel-plugin/main.c	2008-03-15 23:38:18.000000000 +0100
+++ xfce4-genmon-plugin-3.2/panel-plugin/main.c	2011-02-17 18:55:26.706550856 +0100
@@ -732,6 +732,7 @@
         (poMonitor->wBox), BORDER);
     gtk_container_add (GTK_CONTAINER (poMonitor->wEventBox),
         poMonitor->wBox);
+	gtk_event_box_set_visible_window(poMonitor->wEventBox, FALSE);
 
     poMonitor->wTitle = gtk_label_new (poConf->acTitle);
     if (poConf->fTitleDisplayed)