Index: includes/common.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/common.inc,v
retrieving revision 1.750
diff -u -F^f -r1.750 common.inc
--- includes/common.inc	10 Jan 2008 23:14:58 -0000	1.750
+++ includes/common.inc	11 Jan 2008 17:18:05 -0000
@@ -329,7 +329,7 @@ function drupal_goto($path = '', $query 
  */
 function drupal_site_offline() {
   drupal_maintenance_theme();
-  drupal_set_header('HTTP/1.1 503 Service unavailable');
+  drupal_set_header($_SERVER['SERVER_PROTOCOL'] .' 503 Service unavailable');
   drupal_set_title(t('Site off-line'));
   print theme('maintenance_page', filter_xss_admin(variable_get('site_offline_message',
     t('@site is currently under maintenance. We should be back shortly. Thank you for your patience.', array('@site' => variable_get('site_name', 'Drupal'))))));
@@ -339,7 +339,7 @@ function drupal_site_offline() {
  * Generates a 404 error if the request can not be handled.
  */
 function drupal_not_found() {
-  drupal_set_header('HTTP/1.1 404 Not Found');
+  drupal_set_header($_SERVER['SERVER_PROTOCOL'] .' 404 Not Found');
 
   watchdog('page not found', check_plain($_GET['q']), NULL, WATCHDOG_WARNING);
 
@@ -369,7 +369,7 @@ function drupal_not_found() {
  * Generates a 403 error if the request is not allowed.
  */
 function drupal_access_denied() {
-  drupal_set_header('HTTP/1.1 403 Forbidden');
+  drupal_set_header($_SERVER['SERVER_PROTOCOL'] .' 403 Forbidden');
   watchdog('access denied', check_plain($_GET['q']), NULL, WATCHDOG_WARNING);
 
   // Keep old path for reference.
Index: includes/database.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/database.inc,v
retrieving revision 1.92
diff -u -F^f -r1.92 database.inc
--- includes/database.inc	8 Jan 2008 16:03:31 -0000	1.92
+++ includes/database.inc	11 Jan 2008 17:18:05 -0000
@@ -173,7 +173,7 @@ function db_set_active($name = 'default'
 function _db_error_page($error = '') {
   global $db_type;
   drupal_maintenance_theme();
-  drupal_set_header('HTTP/1.1 503 Service Unavailable');
+  drupal_set_header($_SERVER['SERVER_PROTOCOL'] .' 503 Service Unavailable');
   drupal_set_title('Site off-line');
 
   $message = '<p>The site is currently not available due to technical problems. Please try again later. Thank you for your understanding.</p>';
Index: includes/bootstrap.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/bootstrap.inc,v
retrieving revision 1.206
diff -u -F^f -r1.206 bootstrap.inc
--- includes/bootstrap.inc	10 Jan 2008 22:47:17 -0000	1.206
+++ includes/bootstrap.inc	11 Jan 2008 17:18:06 -0000
@@ -592,7 +592,7 @@ function drupal_page_cache_header($cache
   if ($if_modified_since && $if_none_match
       && $if_none_match == $etag // etag must match
       && $if_modified_since == $last_modified) {  // if-modified-since must match
-    header('HTTP/1.1 304 Not Modified');
+    header($_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: $etag");
     exit();
@@ -955,7 +955,7 @@ function _drupal_bootstrap($phase) {
     case DRUPAL_BOOTSTRAP_ACCESS:
       // Deny access to hosts which were banned - t() is not yet available.
       if (drupal_is_denied('host', ip_address())) {
-        header('HTTP/1.1 403 Forbidden');
+        header($_SERVER['SERVER_PROTOCOL'] .' 403 Forbidden');
         print 'Sorry, '. check_plain(ip_address()) .' has been banned.';
         exit();
       }