diff -Nur -x '*.orig' -x '*~' metacity-2.27.1/src/core/display.c metacity-2.27.1.new/src/core/display.c
--- metacity-2.27.1/src/core/display.c	2009-09-09 06:55:35.000000000 +1000
+++ metacity-2.27.1.new/src/core/display.c	2009-09-10 16:46:01.000000000 +1000
@@ -1821,6 +1821,7 @@
         {
           switch (meta_prefs_get_focus_mode ())
             {
+            case META_FOCUS_MODE_STRICT:
             case META_FOCUS_MODE_SLOPPY:
             case META_FOCUS_MODE_MOUSE:
               display->mouse_mode = TRUE;
diff -Nur -x '*.orig' -x '*~' metacity-2.27.1/src/core/prefs.c metacity-2.27.1.new/src/core/prefs.c
--- metacity-2.27.1/src/core/prefs.c	2009-09-09 06:55:35.000000000 +1000
+++ metacity-2.27.1.new/src/core/prefs.c	2009-09-10 16:46:01.000000000 +1000
@@ -176,6 +176,7 @@
     { META_FOCUS_MODE_CLICK,  "click" },
     { META_FOCUS_MODE_SLOPPY, "sloppy" },
     { META_FOCUS_MODE_MOUSE,  "mouse" },
+    { META_FOCUS_MODE_STRICT, "strict" },
     { 0, NULL },
   };
 
diff -Nur -x '*.orig' -x '*~' metacity-2.27.1/src/core/window.c metacity-2.27.1.new/src/core/window.c
--- metacity-2.27.1/src/core/window.c	2009-09-09 06:55:35.000000000 +1000
+++ metacity-2.27.1.new/src/core/window.c	2009-09-10 16:46:01.000000000 +1000
@@ -2296,7 +2296,7 @@
   if (window->showing_for_first_time)
     {
       window->showing_for_first_time = FALSE;
-      if (takes_focus_on_map)
+      if (takes_focus_on_map && meta_prefs_get_focus_mode () != META_FOCUS_MODE_STRICT)
         {                
           meta_window_focus (window, timestamp);
         }
diff -Nur -x '*.orig' -x '*~' metacity-2.27.1/src/core/workspace.c metacity-2.27.1.new/src/core/workspace.c
--- metacity-2.27.1/src/core/workspace.c	2009-09-09 06:55:35.000000000 +1000
+++ metacity-2.27.1.new/src/core/workspace.c	2009-09-10 16:46:01.000000000 +1000
@@ -922,7 +922,8 @@
         }
       else if (meta_prefs_get_focus_mode () == META_FOCUS_MODE_SLOPPY)
         focus_ancestor_or_mru_window (workspace, not_this_one, timestamp);
-      else if (meta_prefs_get_focus_mode () == META_FOCUS_MODE_MOUSE)
+      else if (meta_prefs_get_focus_mode () == META_FOCUS_MODE_MOUSE ||
+               meta_prefs_get_focus_mode () == META_FOCUS_MODE_STRICT)
         {
           meta_topic (META_DEBUG_FOCUS,
                       "Setting focus to no_focus_window, since no valid "
diff -Nur -x '*.orig' -x '*~' metacity-2.27.1/src/include/common.h metacity-2.27.1.new/src/include/common.h
--- metacity-2.27.1/src/include/common.h	2009-09-09 06:55:35.000000000 +1000
+++ metacity-2.27.1.new/src/include/common.h	2009-09-10 16:46:01.000000000 +1000
@@ -161,7 +161,8 @@
 {
   META_FOCUS_MODE_CLICK,
   META_FOCUS_MODE_SLOPPY,
-  META_FOCUS_MODE_MOUSE
+  META_FOCUS_MODE_MOUSE,
+  META_FOCUS_MODE_STRICT
 } MetaFocusMode;
 
 typedef enum