diff -Naur metacity-2.10.1/src/compositor.c metacity-2.10.1-change/src/compositor.c
--- metacity-2.10.1/src/compositor.c	2005-02-24 22:02:44.000000000 +0000
+++ metacity-2.10.1-change/src/compositor.c	2005-06-27 22:29:22.000000000 +0100
@@ -780,8 +831,8 @@
   if (screen == NULL || screen->root_picture == None)
     return;
 
-  r.x = 0;
-  r.y = 0;
+  r.x = event->x;
+  r.y = event->y;
   r.width = screen->width;
   r.height = screen->height;
   region = XFixesCreateRegion (compositor->display->xdisplay, &r, 1);
