Index: src/wp-login.php
===================================================================
--- src/wp-login.php	(revision 44923)
+++ src/wp-login.php	(working copy)
@@ -636,9 +636,12 @@
 		?>
 	</p>
 
+		<?php login_footer( 'user_login' ); ?>
+
+		<script type="text/javascript">
+		document.getElementById('wp-submit').addEventListener('click',function(){this.form.submit();this.disabled=true;});
+		</script>
 		<?php
-		login_footer( 'user_login' );
-
 		break;
 
 	case 'resetpass':