diff --git a/core/js/js.js b/core/js/js.js
index 6b0c289850..c137f734d9 100644
--- a/core/js/js.js
+++ b/core/js/js.js
@@ -5,6 +5,10 @@
  * To the end of config/config.php to enable debug mode.
  * The undefined checks fix the broken ie8 console
  */
+var oc_debug;
+var oc_webroot;
+var oc_requesttoken;
+oc_webroot = oc_webroot || location.pathname.substr(0, location.pathname.lastIndexOf('/'));
 if (oc_debug !== true || typeof console === "undefined" || typeof console.log === "undefined") {
 	if (!window.console) {
 		window.console = {};
diff --git a/core/js/setup.js b/core/js/setup.js
index 9aded6591c..2656cac2f4 100644
--- a/core/js/setup.js
+++ b/core/js/setup.js
@@ -52,12 +52,10 @@ $(document).ready(function() {
 		// Save form parameters
 		var post = $(this).serializeArray();
 
-		// FIXME: This lines are breaking the installation
 		// Disable inputs
-		// $(':submit', this).attr('disabled','disabled').val('Finishing …');
-		// $('input', this).addClass('ui-state-disabled').attr('disabled','disabled');
-		// $('#selectDbType').button('disable');
-		// $('label.ui-button', this).addClass('ui-state-disabled').attr('aria-disabled', 'true').button('disable');
+		$(':submit', this).attr('disabled','disabled').val('Finishing …');
+		$('input', this).addClass('ui-state-disabled').attr('disabled','disabled');
+		$('#selectDbType').buttonset('disable');
 
 		// Create the form
 		var form = $('<form>');
diff --git a/core/templates/layout.base.php b/core/templates/layout.base.php
index 47fb75612c..2049bcb36d 100644
--- a/core/templates/layout.base.php
+++ b/core/templates/layout.base.php
@@ -7,7 +7,6 @@
 		<?php foreach ($_['cssfiles'] as $cssfile): ?>
 			<link rel="stylesheet" href="<?php echo $cssfile; ?>" type="text/css" media="screen" />
 		<?php endforeach; ?>
-		<script type="text/javascript" src="<?php echo OC_Helper::linkToRoute('js_config');?>"></script>
 		<?php foreach ($_['jsfiles'] as $jsfile): ?>
 			<script type="text/javascript" src="<?php echo $jsfile; ?>"></script>
 		<?php endforeach; ?>
diff --git a/core/templates/layout.guest.php b/core/templates/layout.guest.php
index 9aabc08ace..69330aa9fc 100644
--- a/core/templates/layout.guest.php
+++ b/core/templates/layout.guest.php
@@ -8,7 +8,6 @@
 		<?php foreach($_['cssfiles'] as $cssfile): ?>
 			<link rel="stylesheet" href="<?php echo $cssfile; ?>" type="text/css" media="screen" />
 		<?php endforeach; ?>
-		<script type="text/javascript" src="<?php echo OC_Helper::linkToRoute('js_config');?>"></script>
 		<?php foreach($_['jsfiles'] as $jsfile): ?>
 			<script type="text/javascript" src="<?php echo $jsfile; ?>"></script>
 		<?php endforeach; ?>
diff --git a/core/templates/layout.user.php b/core/templates/layout.user.php
index ecba54497c..c8b580b5fd 100644
--- a/core/templates/layout.user.php
+++ b/core/templates/layout.user.php
@@ -8,7 +8,6 @@
 		<?php foreach($_['cssfiles'] as $cssfile): ?>
 			<link rel="stylesheet" href="<?php echo $cssfile; ?>" type="text/css" media="screen" />
 		<?php endforeach; ?>
-		<script type="text/javascript" src="<?php echo OC_Helper::linkToRoute('js_config');?>"></script>
 		<?php foreach($_['jsfiles'] as $jsfile): ?>
 			<script type="text/javascript" src="<?php echo $jsfile; ?>"></script>
 		<?php endforeach; ?>
diff --git a/lib/templatelayout.php b/lib/templatelayout.php
index 28bdca6be0..345f540af0 100644
--- a/lib/templatelayout.php
+++ b/lib/templatelayout.php
@@ -39,6 +39,9 @@ class OC_TemplateLayout extends OC_Template {
 		// Add the js files
 		$jsfiles = self::findJavascriptFiles(OC_Util::$scripts);
 		$this->assign('jsfiles', array(), false);
+		if (OC_Config::getValue('installed', false)) {
+			$this->append( 'jsfiles', OC_Helper::linkToRoute('js_config'));
+		}
 		if (!empty(OC_Util::$core_scripts)) {
 			$this->append( 'jsfiles', OC_Helper::linkToRemoteBase('core.js', false));
 		}