Index: includes/bootstrap.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/bootstrap.inc,v
retrieving revision 1.229
diff -u -p -r1.229 bootstrap.inc
--- includes/bootstrap.inc	6 Oct 2008 14:26:54 -0000	1.229
+++ includes/bootstrap.inc	7 Oct 2008 22:08:02 -0000
@@ -650,7 +650,7 @@ function drupal_page_cache_header($cache
     header($_SERVER['SERVER_PROTOCOL'] . ' 304 Not Modified');
     // All 304 responses must send an etag if the 200 response for the same object contained an etag
     header("Etag: $etag");
-    exit();
+    return;
   }
 
   // Send appropriate response: