### Eclipse Workspace Patch 1.0
#P drupal6
Index: includes/common.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/common.inc,v
retrieving revision 1.756.2.106
diff -u -r1.756.2.106 common.inc
--- includes/common.inc	15 Dec 2010 21:11:22 -0000	1.756.2.106
+++ includes/common.inc	7 Feb 2011 15:44:01 -0000
@@ -1848,7 +1848,7 @@
 
   $preprocess_css = (variable_get('preprocess_css', FALSE) && (!defined('MAINTENANCE_MODE') || MAINTENANCE_MODE != 'update'));
   $directory = file_directory_path();
-  $is_writable = is_dir($directory) && is_writable($directory) && (variable_get('file_downloads', FILE_DOWNLOADS_PUBLIC) == FILE_DOWNLOADS_PUBLIC);
+  $is_writable = is_dir($directory) && is_writable($directory);
 
   // A dummy query-string is added to filenames, to gain control over
   // browser-caching. The string changes on every update or full cache
@@ -1901,7 +1901,7 @@
       // starting with "ad*".
       $filename = 'css_'. md5(serialize($types) . $query_string) .'.css';
       $preprocess_file = drupal_build_css_cache($types, $filename);
-      $output .= '<link type="text/css" rel="stylesheet" media="'. $media .'" href="'. base_path() . $preprocess_file .'" />'."\n";
+      $output .= '<style type="text/css" media="'. $media .'">@import "'. file_create_url($preprocess_file) .'";</style>'. "\n";
     }
   }
 
Index: modules/system/system.admin.inc
===================================================================
RCS file: /cvs/drupal/drupal/modules/system/system.admin.inc,v
retrieving revision 1.63.2.16
diff -u -r1.63.2.16 system.admin.inc
--- modules/system/system.admin.inc	6 Sep 2010 10:49:14 -0000	1.63.2.16
+++ modules/system/system.admin.inc	7 Feb 2011 15:44:01 -0000
@@ -1344,7 +1344,7 @@
   );
 
   $directory = file_directory_path();
-  $is_writable = is_dir($directory) && is_writable($directory) && (variable_get('file_downloads', FILE_DOWNLOADS_PUBLIC) == FILE_DOWNLOADS_PUBLIC);
+  $is_writable = is_dir($directory) && is_writable($directory);
   $form['bandwidth_optimizations']['preprocess_css'] = array(
     '#type' => 'radios',
     '#title' => t('Optimize CSS files'),
Index: modules/system/system.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/system/system.module,v
retrieving revision 1.585.2.59
diff -u -r1.585.2.59 system.module
--- modules/system/system.module	15 Dec 2010 21:11:23 -0000	1.585.2.59
+++ modules/system/system.module	7 Feb 2011 15:44:02 -0000
@@ -1940,3 +1940,13 @@
   $image = theme('image', $image_path, t('Powered by Drupal, an open source content management system'), t('Powered by Drupal, an open source content management system'));
   return l($image, 'http://drupal.org', array('html' => TRUE, 'absolute' => TRUE, 'external' => TRUE));
 }
+
+/**
+ * Implementation of hook_file_download().
+ * Make sure css aggregation folder is always accessible when using private file downloads.
+ */
+function system_file_download($file) {  
+  if (strpos($file, 'css/') === 0) {
+    return array('Content-type: text/css');
+  }
+}