diff -p -up metacity-2.21.3/src/metacity.schemas.in.enable-compositor metacity-2.21.3/src/metacity.schemas.in
--- metacity-2.21.3/src/metacity.schemas.in.enable-compositor	2007-12-19 11:25:31.000000000 +0100
+++ metacity-2.21.3/src/metacity.schemas.in	2007-12-19 11:25:40.000000000 +0100
@@ -311,7 +311,7 @@
       <applyto>/apps/metacity/general/compositing_manager</applyto>
       <owner>metacity</owner>
       <type>bool</type>
-      <default>false</default>
+      <default>true</default>
       <locale name="C">
         <short>Compositing Manager</short>
         <long>