diff --git a/classes/Category.php b/classes/Category.php
index a77f122d9..310b9058f 100644
--- a/classes/Category.php
+++ b/classes/Category.php
@@ -831,20 +831,15 @@ class CategoryCore extends ObjectModel
 		if (!Validate::isUnsignedId($id_category) || !Validate::isUnsignedId($id_lang))
 			return false;
 
-		if (isset(self::$_links[$id_category.'-'.$id_lang]))
-			return self::$_links[$id_category.'-'.$id_lang];
-
-		$result = Db::getInstance()->getRow('
-			SELECT cl.`link_rewrite`
-			FROM `'._DB_PREFIX_.'category_lang` cl
-			WHERE `id_lang` = '.(int)$id_lang.'
-			'.Shop::addSqlRestrictionOnLang('cl').'
-			AND cl.`id_category` = '.(int)$id_category
-		);
-
-		self::$_links[$id_category.'-'.$id_lang] = $result['link_rewrite'];
-
-		return $result['link_rewrite'];
+		if (!isset(self::$_links[$id_category.'-'.$id_lang]))
+			self::$_links[$id_category.'-'.$id_lang] = Db::getInstance()->getValue('
+				SELECT cl.`link_rewrite`
+				FROM `'._DB_PREFIX_.'category_lang` cl
+				WHERE `id_lang` = '.(int)$id_lang.'
+				'.Shop::addSqlRestrictionOnLang('cl').'
+				AND cl.`id_category` = '.(int)$id_category
+			);
+		return self::$_links[$id_category.'-'.$id_lang];
 	}
 
 	public function getLink(Link $link = null)
diff --git a/classes/Tools.php b/classes/Tools.php
index 206ebe201..e49080443 100644
--- a/classes/Tools.php
+++ b/classes/Tools.php
@@ -684,17 +684,20 @@ class ToolsCore
 			if ($files = scandir($dirname))
 			{
 				foreach ($files as $file)
-				if ($file != '.' && $file != '..' && $file != '.svn')
-				{
-					if (is_dir($dirname.$file))
-						Tools::deleteDirectory($dirname.$file, true);
-					elseif (file_exists($dirname.$file))
-						unlink($dirname.$file);
-				}
+    				if ($file != '.' && $file != '..' && $file != '.svn')
+    				{
+    					if (is_dir($dirname.$file))
+    						Tools::deleteDirectory($dirname.$file, true);
+    					elseif (file_exists($dirname.$file))
+    						unlink($dirname.$file);
+    				}
 				if ($delete_self)
-					rmdir($dirname);
+					if (!rmdir($dirname))
+                        return false;
+                return true;                    
 			}
-	}
+        return false;
+    }
 
 	/**
 	* Display an error according to an error code
diff --git a/install-dev/upgrade/php/add_order_reference_in_order_payment.php b/install-dev/upgrade/php/add_order_reference_in_order_payment.php
index 75b5d0782..266de44d4 100644
--- a/install-dev/upgrade/php/add_order_reference_in_order_payment.php
+++ b/install-dev/upgrade/php/add_order_reference_in_order_payment.php
@@ -34,7 +34,7 @@ function add_order_reference_in_order_payment()
 	ON o.id_order = op.id_order');
 	
 	if (!is_object($payments))
-		return false;
+		return true;
 	
 	$errors = array();
 	// Populate "order_reference"
@@ -62,7 +62,7 @@ function add_order_reference_in_order_payment()
 	HAVING COUNT(*) > 1');
 	
 	if (!is_object($duplicate_lines))
-		return false;
+		return true;
 
 	$order_payments_to_remove = array();
 	while ($order_payments = Db::getInstance()->nextRow($duplicate_lines))
diff --git a/install-dev/upgrade/sql/1.5.0.0.sql b/install-dev/upgrade/sql/1.5.0.0.sql
index e38efa8fc..94a1e36d6 100755
--- a/install-dev/upgrade/sql/1.5.0.0.sql
+++ b/install-dev/upgrade/sql/1.5.0.0.sql
@@ -312,9 +312,6 @@ PRIMARY KEY (`id_scene`, `id_shop`),
 ) ENGINE=ENGINE_TYPE  DEFAULT CHARSET=utf8;
 INSERT INTO `PREFIX_scene_shop` (id_shop, id_scene) (SELECT 1, id_scene FROM PREFIX_scene);
 
-ALTER TABLE `PREFIX_delivery` ADD `id_shop` INT UNSIGNED NULL DEFAULT NULL AFTER `id_delivery`;
-ALTER TABLE `PREFIX_delivery` ADD `id_group_shop` INT UNSIGNED NULL DEFAULT NULL AFTER `id_shop`;
-
 /* PHP:create_multistore(); */;
 
 UPDATE `PREFIX_customization` INNER JOIN `PREFIX_orders` USING(id_cart) SET in_cart = 1;
diff --git a/install-dev/upgrade/sql/1.5.0.1.sql b/install-dev/upgrade/sql/1.5.0.1.sql
index c3e62fe48..b5cada9a2 100644
--- a/install-dev/upgrade/sql/1.5.0.1.sql
+++ b/install-dev/upgrade/sql/1.5.0.1.sql
@@ -1,5 +1,8 @@
 SET NAMES 'utf8';
 
+ALTER TABLE `PREFIX_delivery` ADD `id_shop` INT UNSIGNED NULL DEFAULT NULL AFTER `id_delivery`;
+ALTER TABLE `PREFIX_delivery` ADD `id_group_shop` INT UNSIGNED NULL DEFAULT NULL AFTER `id_shop`;
+
 CREATE TABLE IF NOT EXISTS `PREFIX_module_access` (
   `id_profile` int(10) unsigned NOT NULL,
   `id_module` int(10) unsigned NOT NULL,
diff --git a/modules/blockcms/upgrade/install-1.2.php b/modules/blockcms/upgrade/install-1.2.php
deleted file mode 100644
index 7daca8af4..000000000
--- a/modules/blockcms/upgrade/install-1.2.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-if (!defined('_PS_VERSION_'))
-	exit;
-
-function upgrade_module_1_2($object)
-{
-	return ($object->registerHook('actionObjectCmsUpdateAfter') && $object->registerHook('actionObjectCmsDeleteAfter'));
-}
diff --git a/modules/blocknewproducts/upgrade/install-1.0.php b/modules/blocknewproducts/upgrade/install-1.0.php
deleted file mode 100644
index ed388519f..000000000
--- a/modules/blocknewproducts/upgrade/install-1.0.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-if (!defined('_PS_VERSION_'))
-	exit;
-
-function upgrade_module_1_0($object)
-{
-	return ($object->registerHook('addproduct') && $object->registerHook('updateproduct') && $object->registerHook('deleteproduct'));
-}
diff --git a/modules/blockspecials/upgrade/install-1.0.php b/modules/blockspecials/upgrade/install-1.0.php
deleted file mode 100644
index 3dbc3bfe0..000000000
--- a/modules/blockspecials/upgrade/install-1.0.php
+++ /dev/null
@@ -1,10 +0,0 @@
-<?php
-
-if (!defined('_PS_VERSION_'))
-	exit;
-
-function upgrade_module_1_0($object)
-{
-	Configuration::updateValue('BLOCKSPECIALS_NB_CACHES', 20);
-	return ($object->registerHook('addproduct') && $object->registerHook('updateproduct') && $object->registerHook('deleteproduct'));
-}
diff --git a/modules/blockwishlist/blockwishlist.css b/modules/blockwishlist/blockwishlist.css
index 2ff9135d3..8f0c50613 100644
--- a/modules/blockwishlist/blockwishlist.css
+++ b/modules/blockwishlist/blockwishlist.css
@@ -96,7 +96,6 @@
    height:20px;
    width:288px;
    border:1px solid #ccc;
-   background:url(../img/bg_input.png) repeat-x 0 0 #fff
 }
 #module-blockwishlist-mywishlist #mywishlist  p.submit {
 	margin-right:25px;
diff --git a/modules/homefeatured/upgrade/install-1.0.php b/modules/homefeatured/upgrade/install-1.0.php
deleted file mode 100644
index ed388519f..000000000
--- a/modules/homefeatured/upgrade/install-1.0.php
+++ /dev/null
@@ -1,9 +0,0 @@
-<?php
-
-if (!defined('_PS_VERSION_'))
-	exit;
-
-function upgrade_module_1_0($object)
-{
-	return ($object->registerHook('addproduct') && $object->registerHook('updateproduct') && $object->registerHook('deleteproduct'));
-}
diff --git a/tools/profiling/Controller.php b/tools/profiling/Controller.php
index 16aec04d7..846248e32 100644
--- a/tools/profiling/Controller.php
+++ b/tools/profiling/Controller.php
@@ -101,6 +101,16 @@ abstract class Controller extends ControllerCore
 		return '<span style="color:green">'.round($n, 2).' Mb</span>';
 	}
 
+	private function displayPeakMemoryColor($n)
+	{
+		$n /= 1048576;
+		if ($n > 16)
+			return '<span style="color:red">'.round($n, 1).' Mb</span>';
+		if ($n > 12)
+			return '<span style="color:orange">'.round($n, 1).' Mb</span>';
+		return '<span style="color:green">'.round($n, 1).' Mb</span>';
+	}
+
 	private function displaySQLQueries($n)
 	{
 		if ($n > 150)
@@ -178,10 +188,12 @@ abstract class Controller extends ControllerCore
 			return;
 
 		$this->_memory['config'] = memory_get_usage();
+		$this->_mempeak['config'] = memory_get_peak_usage();
 		$this->_time['config'] = microtime(true);
 
 		parent::__construct();
 		$this->_memory['constructor'] = memory_get_usage();
+		$this->_mempeak['constructor'] = memory_get_peak_usage();
 		$this->_time['constructor'] = microtime(true);
 	}
 
@@ -189,21 +201,25 @@ abstract class Controller extends ControllerCore
 	{
 		$this->init();
 		$this->_memory['init'] = memory_get_usage();
+		$this->_mempeak['init'] = memory_get_peak_usage();
 		$this->_time['init'] = microtime(true);
 
 		if ($this->checkAccess())
 		{
 			$this->_memory['checkAccess'] = memory_get_usage();
+			$this->_mempeak['checkAccess'] = memory_get_peak_usage();
 			$this->_time['checkAccess'] = microtime(true);
 
 			if (!$this->content_only && ($this->display_header || (isset($this->className) && $this->className)))
 				$this->setMedia();
 			$this->_memory['setMedia'] = memory_get_usage();
+			$this->_mempeak['setMedia'] = memory_get_peak_usage();
 			$this->_time['setMedia'] = microtime(true);
 
 			// postProcess handles ajaxProcess
 			$this->postProcess();
 			$this->_memory['postProcess'] = memory_get_usage();
+			$this->_mempeak['postProcess'] = memory_get_peak_usage();
 			$this->_time['postProcess'] = microtime(true);
 
 			if (!empty($this->redirect_after))
@@ -212,15 +228,18 @@ abstract class Controller extends ControllerCore
 			if (!$this->content_only && ($this->display_header || (isset($this->className) && $this->className)))
 				$this->initHeader();
 			$this->_memory['initHeader'] = memory_get_usage();
+			$this->_mempeak['initHeader'] = memory_get_peak_usage();
 			$this->_time['initHeader'] = microtime(true);
 
 			$this->initContent();
 			$this->_memory['initContent'] = memory_get_usage();
+			$this->_mempeak['initContent'] = memory_get_peak_usage();
 			$this->_time['initContent'] = microtime(true);
 
 			if (!$this->content_only && ($this->display_footer || (isset($this->className) && $this->className)))
 				$this->initFooter();
 			$this->_memory['initFooter'] = memory_get_usage();
+			$this->_mempeak['initFooter'] = memory_get_peak_usage();
 			$this->_time['initFooter'] = microtime(true);
 
 			// default behavior for ajax process is to use $_POST[action] or $_GET[action]
@@ -264,7 +283,11 @@ abstract class Controller extends ControllerCore
 	private function sizeofvar($var)
 	{
 		$start_memory = memory_get_usage();
-		$tmp = Tools::unSerialize(serialize($var));
+		try {
+			$tmp = Tools::unSerialize(serialize($var));
+		} catch (Exception $e) {
+			$tmp = strlen((string)$var);
+		}
 		$size = memory_get_usage() - $start_memory;
 		return $size;
 	}
@@ -275,11 +298,14 @@ abstract class Controller extends ControllerCore
 
 		$this->display();
 		$this->_memory['display'] = memory_get_usage();
+		$this->_mempeak['display'] = memory_get_peak_usage();
 		$this->_time['display'] = microtime(true);
 
 		if (!$this->ini_get_display_errors())
 			return;
 
+		$memory_peak_usage = memory_get_peak_usage();
+			
 		$hr = '<hr style="color:#F5F5F5;margin:2px" />';
 
 		$totalSize = 0;
@@ -337,14 +363,14 @@ abstract class Controller extends ControllerCore
 		echo '</ul>
 		</div>
 		<div class="rte" style="text-align:left;padding:8px;float:left;margin-left:20px">
-			<b>Memory peak usage</b>: '.$this->displayMemoryColor(memory_get_peak_usage());
+			<b>Memory peak usage</b>: '.$this->displayPeakMemoryColor($memory_peak_usage);
 		if (self::$_footer)
 		{
 			echo '<ul>';
 			$last_memory = 0;
 			foreach ($this->_memory as $k => $memory)
 			{
-				echo '<li>'.$k.': '.$this->displayMemoryColor($memory - $last_memory).'</li>';
+				echo '<li>'.$k.': '.$this->displayMemoryColor($memory - $last_memory).' ('.$this->displayPeakMemoryColor($this->_mempeak[$k]).')</li>';
 				$last_memory = $memory;
 			}
 			echo '</ul>';