=== modified file 'profiles/standard/standard.install'
--- profiles/standard/standard.install	2010-01-04 23:08:34 +0000
+++ profiles/standard/standard.install	2010-01-07 13:20:21 +0000
@@ -411,4 +411,7 @@ function standard_install() {
     ->execute();
   variable_set('admin_theme', 'seven');
   variable_set('node_admin_theme', '1');
+
+  // Enable CSS Preprocessing
+  variable_set('preprocess_css', 1);
 }