diff --git a/phpBB/docs/CHANGELOG.html b/phpBB/docs/CHANGELOG.html
index 9f751c701a..3cd2116ddb 100644
--- a/phpBB/docs/CHANGELOG.html
+++ b/phpBB/docs/CHANGELOG.html
@@ -89,6 +89,7 @@
 
 	<ul>
 		<li>[Feature] Backported 3.2 cpatcha plugins.</li>
+		<li>[Feature] Introduced new ACM plugins: null</li>
 	</ul>
 	<a name="v304"></a><h3>1.ii. Changes since 3.0.4</h3>
 
diff --git a/phpBB/includes/acm/acm_null.php b/phpBB/includes/acm/acm_null.php
new file mode 100644
index 0000000000..c2363b9ddf
--- /dev/null
+++ b/phpBB/includes/acm/acm_null.php
@@ -0,0 +1,163 @@
+<?php
+/**
+*
+* @package acm
+* @version $Id$
+* @copyright (c) 2005, 2009 phpBB Group
+* @license http://opensource.org/licenses/gpl-license.php GNU Public License
+*
+*/
+
+/**
+* @ignore
+*/
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+/**
+* ACM Null Caching
+* @package acm
+*/
+class acm
+{
+	/**
+	* Set cache path
+	*/
+	function acm()
+	{
+
+	}
+
+	/**
+	* Load global cache
+	*/
+	function load()
+	{
+		return true;
+	}
+
+	/**
+	* Unload cache object
+	*/
+	function unload()
+	{
+
+	}
+
+	/**
+	* Save modified objects
+	*/
+	function save()
+	{
+
+	}
+
+	/**
+	* Tidy cache
+	*/
+	function tidy()
+	{
+		// This cache always has a tidy room.
+		set_config('cache_last_gc', time(), true);
+	}
+
+	/**
+	* Get saved cache object
+	*/
+	function get($var_name)
+	{
+		return false;
+	}
+
+	/**
+	* Put data into cache
+	*/
+	function put($var_name, $var, $ttl = 0)
+	{
+
+	}
+
+	/**
+	* Purge cache data
+	*/
+	function purge()
+	{
+
+	}
+
+	/**
+	* Destroy cache data
+	*/
+	function destroy($var_name, $table = '')
+	{
+
+	}
+
+	/**
+	* Check if a given cache entry exist
+	*/
+	function _exists($var_name)
+	{
+		return false;
+	}
+
+	/**
+	* Load cached sql query
+	*/
+	function sql_load($query)
+	{
+		return false;
+	}
+
+	/**
+	* Save sql query
+	*/
+	function sql_save($query, &$query_result, $ttl)
+	{
+
+	}
+
+	/**
+	* Ceck if a given sql query exist in cache
+	*/
+	function sql_exists($query_id)
+	{
+		return false;
+	}
+
+	/**
+	* Fetch row from cache (database)
+	*/
+	function sql_fetchrow($query_id)
+	{
+		return false;
+	}
+
+	/**
+	* Fetch a field from the current row of a cached database result (database)
+	*/
+	function sql_fetchfield($query_id, $field)
+	{
+		return false;
+	}
+
+	/**
+	* Seek a specific row in an a cached database result (database)
+	*/
+	function sql_rowseek($rownum, $query_id)
+	{
+		return false;
+	}
+
+	/**
+	* Free memory used for a cached database result (database)
+	*/
+	function sql_freeresult($query_id)
+	{
+		return false;
+	}
+}
+
+?>
\ No newline at end of file