diff -urp --strip-trailing-cr drupal-6x-orig/includes/bootstrap.inc drupal-6.x-dev/includes/bootstrap.inc
--- drupal-6x-orig/includes/bootstrap.inc	2007-09-07 12:33:06.000000000 +0200
+++ drupal-6.x-dev/includes/bootstrap.inc	2007-09-08 14:09:09.000000000 +0200
@@ -257,7 +257,7 @@ function conf_path($require_settings = T
  */
 function drupal_unset_globals() {
   if (ini_get('register_globals')) {
-    $allowed = array('_ENV' => 1, '_GET' => 1, '_POST' => 1, '_COOKIE' => 1, '_FILES' => 1, '_SERVER' => 1, '_REQUEST' => 1, 'access_check' => 1, 'GLOBALS' => 1);
+    $allowed = array('_ENV' => 1, '_GET' => 1, '_POST' => 1, '_COOKIE' => 1, '_FILES' => 1, '_SERVER' => 1, '_REQUEST' => 1, 'GLOBALS' => 1);
     foreach ($GLOBALS as $key => $value) {
       if (!isset($allowed[$key])) {
         unset($GLOBALS[$key]);
diff -urp --strip-trailing-cr drupal-6x-orig/install.php drupal-6.x-dev/install.php
--- drupal-6x-orig/install.php	2007-09-04 23:10:45.000000000 +0200
+++ drupal-6.x-dev/install.php	2007-09-08 14:08:00.000000000 +0200
@@ -15,10 +15,12 @@ require_once './includes/install.inc';
  *   The installation phase we should proceed to.
  */
 function install_main() {
-  global $profile, $install_locale, $conf;
   require_once './includes/bootstrap.inc';
   drupal_bootstrap(DRUPAL_BOOTSTRAP_CONFIGURATION);
 
+  // This must go after drupal_bootstrap(), which unsets globals!
+  global $profile, $install_locale, $conf;
+
   require_once './modules/system/system.install';
   require_once './includes/file.inc';