diff -u ./src/noskin_window.c~ ./src/noskin_window.c
--- ./src/noskin_window.c~	Sun Jun 25 02:45:42 2006 +0100
+++ ./src/noskin_window.c	Wed Jun 28 01:48:43 2006 +0100
@@ -885,6 +885,12 @@ void noskin_main_init (void)
 
   have_video = 1;
 
+  Display *d = GDK_WINDOW_XDISPLAY (app->window);
+  XChangeProperty (d, GDK_WINDOW_XWINDOW (app->window),
+		   XInternAtom (d, "_NET_WM_WINDOW_OPACITY_LOCKED", False),
+		   XA_CARDINAL, 32, PropModeReplace,
+		   (unsigned char *)&have_video, 1);
+
   g_idle_add ((GSourceFunc) noskin_main_init_cb, NULL);
   g_timeout_add (500, update_slider_cb, NULL);
 }