Index: includes/common.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/common.inc,v
retrieving revision 1.756.2.17
diff -u -F^f -r1.756.2.17 common.inc
--- includes/common.inc	25 Jun 2008 10:56:11 -0000	1.756.2.17
+++ includes/common.inc	6 Jul 2008 01:34:49 -0000
@@ -1887,6 +1887,8 @@ function _drupal_load_stylesheet($matche
  */
 function drupal_clear_css_cache() {
   file_scan_directory(file_create_path('css'), '.*', array('.', '..', 'CVS'), 'file_delete', TRUE);
+  // Clear the page cache, so cached pages do not reference nonexistent CSS.
+  cache_clear_all();
 }
 
 /**