Index: upgrade.php
===================================================================
--- upgrade.php	(revision 37203)
+++ upgrade.php	(working copy)
@@ -105,6 +105,8 @@
 	 */
 	do_action( 'wp_install', $user );
 
+	update_option( 'theme_switched', true );
+
 	return array('url' => $guessurl, 'user_id' => $user_id, 'password' => $user_password, 'password_message' => $message);
 }
 endif;