diff --git a/phpBB/common.php b/phpBB/common.php
index bd0b843673..7d4323cb38 100644
--- a/phpBB/common.php
+++ b/phpBB/common.php
@@ -190,8 +190,8 @@ set_error_handler('msg_handler');
 $user		= new user();
 $auth		= new auth();
 $template	= new template();
+$cache		= new acm();
 $db			= new sql_db();
-$cache		= new acm($db);
 
 // Connect to DB
 $db->sql_connect($dbhost, $dbuser, $dbpasswd, $dbname, $dbport, false);
diff --git a/phpBB/includes/acm/acm_db.php b/phpBB/includes/acm/acm_db.php
index 054abdb478..a9e1866616 100644
--- a/phpBB/includes/acm/acm_db.php
+++ b/phpBB/includes/acm/acm_db.php
@@ -21,18 +21,12 @@
 
 class acm
 {
-	var $db;
 	var $is_modified = FALSE;
 	var $vars = '';
-	var $sql_enabled = FALSE;
-
-	function acm(&$db)
-	{
-		$this->db =& $db;
-	}
 
 	function load($var_names = '')
 	{
+		global $db;
 		$this->vars = array();
 
 		$sql = 'SELECT var_name, var_ts, var_data
@@ -43,9 +37,9 @@ class acm
 			$sql .= " WHERE var_name IN ('" . implode("', '", $var_names) . "')";
 		}
 
-		$result = $this->db->sql_query($sql);
+		$result = $db->sql_query($sql);
 
-		while ($row = $this->db->sql_fetchrow($result))
+		while ($row = $db->sql_fetchrow($result))
 		{
 			$this->vars[$row['var_name']] = array(
 				'data'	=>	unserialize($row['var_data']),
@@ -67,6 +61,8 @@ class acm
 			return;
 		}
 
+		global $db;
+
 		$delete = $insert = array();
 		foreach ($this->vars as $var_name => $var_ary)
 		{
@@ -79,10 +75,10 @@ class acm
 				else
 				{
 					$delete[] = $var_name;
-					$insert[] = "'$var_name', " . time() . ", '" . $this->db->sql_escape(serialize($var_ary['data'])) . "'";
+					$insert[] = "'$var_name', " . time() . ", '" . $db->sql_escape(serialize($var_ary['data'])) . "'";
 				}
 
-				$this->db->sql_query($sql);
+				$db->sql_query($sql);
 			}
 		}
 
@@ -90,7 +86,7 @@ class acm
 		{
 			$sql = 'DELETE FROM ' . CACHE_TABLE . "
 				WHERE var_name IN ('" . implode("', '", $delete) . "')";
-			$this->db->sql_query($sql);
+			$db->sql_query($sql);
 		}
 		if (count($insert))
 		{
@@ -99,7 +95,7 @@ class acm
 				case 'mysql':
 					$sql = 'INSERT INTO ' . CACHE_TABLE . ' (var_name, var_ts, var_data)
 						VALUES (' . implode('), (', $insert) . ')';
-					$this->db->sql_query($sql);
+					$db->sql_query($sql);
 				break;
 			
 				default:
@@ -107,7 +103,7 @@ class acm
 					{
 						$sql = 'INSERT INTO ' . CACHE_TABLE . " (var_name, var_ts, var_data)
 							VALUES ($values)";
-						$this->db->sql_query($sql);
+						$db->sql_query($sql);
 					}
 			}
 		}
@@ -117,9 +113,11 @@ class acm
 
 	function tidy($max_age = 0)
 	{
+		global $db;
+
 		$sql = 'DELETE FROM ' . CACHE_TABLE . '
 			WHERE var_ts < ' . (time() - $max_age);
-		$this->db->sql_query($sql);
+		$db->sql_query($sql);
 	}
 
 	function get($var_name, $max_age = 0)
diff --git a/phpBB/includes/acm/acm_file.php b/phpBB/includes/acm/acm_file.php
index 035885c787..30548f5a5a 100644
--- a/phpBB/includes/acm/acm_file.php
+++ b/phpBB/includes/acm/acm_file.php
@@ -27,7 +27,7 @@ class acm
 
 	var $sql_rowset = array();
 
-	function acm(&$db)
+	function acm()
 	{
 		global $phpbb_root_path;
 		$this->cache_dir = $phpbb_root_path . 'cache/';
diff --git a/phpBB/install/install.php b/phpBB/install/install.php
index 1376210c07..c10554eccf 100644
--- a/phpBB/install/install.php
+++ b/phpBB/install/install.php
@@ -67,7 +67,7 @@ if (@file_exists($phpbb_root_path . 'config.'.$phpEx))
 $stage = (isset($_POST['stage'])) ? intval($_POST['stage']) : 0;
 
 // These are all strings so we'll just traverse an array
-$var_ary = array('language', 'dbms', 'dbhost', 'dbport', 'dbuser', 'dbpasswd', 'dbname', 'table_prefix', 'admin_name', 'admin_pass1', 'admin_pass2', 'board_email1', 'board_email2', 'server_name', 'server_port', 'script_path', 'img_imagick', 'ftp_path', 'ftp_user', 'ftp_pass');
+$var_ary = array('language', 'dbms', 'dbhost', 'dbport', 'dbuser', 'dbpasswd', 'dbname', 'table_prefix', 'admin_name', 'admin_pass1', 'admin_pass2', 'board_email1', 'board_email2', 'server_name', 'server_port', 'script_path', 'acm_type', 'img_imagick', 'ftp_path', 'ftp_user', 'ftp_pass');
 
 foreach ($var_ary as $var)
 {
@@ -767,6 +767,8 @@ if ($stage == 1)
 		<td class="row1" width="50%"><b><?php echo $lang['SCRIPT_PATH']; ?>: </b></td>
 		<td class="row2"><input class="post" type="text" name="script_path" value="<?php echo $script_path; ?>" /></td>
 	</tr>
+		<td class="row1" width="50%"><b><?php echo $lang['CACHE_STORE']; ?>: </b><br /><span class="gensmall"><?php echo $lang['CACHE_STORE_EXPLAIN']; ?></span></td>
+		<td class="row2"><input type="radio" name="acm_type" value="db" <?php echo ($acm_type == 'db') ? 'checked="checked" ' : ''; ?>/> <?php echo $lang['STORE_DATABASE']; ?> <input type="radio" name="acm_type" value="file" <?php echo (!$acm_type || $acm_type == 'file') ? 'checked="checked" ' : ''; ?>/> <?php echo $lang['STORE_FILESYSTEM']; ?></td>
 	<tr>
 		<td class="cat" colspan="2" align="center"><?php echo $s_hidden_fields; ?><input class="btnmain" name="install" type="submit" value="<?php echo $lang['INSTALL_START']; ?>" /></td>
 	</tr>
@@ -814,7 +816,7 @@ if ($stage == 2)
 	$config_data .= "\$dbuser = '$dbuser';\n";
 	$config_data .= "\$dbpasswd = '$dbpasswd';\n\n";
 	$config_data .= "\$table_prefix = '$table_prefix';\n";
-	$config_data .= "\$acm_type = 'file';\n";
+	$config_data .= "\$acm_type = '" . ((!$acm_typefile) ? 'db' : '') . "';\n";
 	$config_data .= "\$load_extensions = '$load_extensions';\n\n";
 	$config_data .= "define('PHPBB_INSTALLED', true);\n";
 	$config_data .= "define('DEBUG', true);\n"; // Comment out when final
@@ -1375,7 +1377,7 @@ function inst_language_select($default = '')
 function can_load_dll($dll)
 {
 	global $suffix;
-
+return false;
 	return ((@ini_get('enable_dl') || strtolower(@ini_get('enable_dl')) == 'on') && (!@ini_get('safe_mode') || strtolower(@ini_get('safe_mode')) == 'off') && @dl($dll . ".$suffix")) ? true : false;
 }
 
diff --git a/phpBB/style.php b/phpBB/style.php
index 288b7fbb75..4d3db9b8b1 100644
--- a/phpBB/style.php
+++ b/phpBB/style.php
@@ -49,7 +49,7 @@ if (!empty($_GET['id']) && !empty($_GET['sid']))
 	require($phpbb_root_path . 'includes/db/' . $dbms . '.'.$phpEx);
 
 	$db = new sql_db();
-	$cache = new acm($db);
+	$cache = new acm();
 
 	// Connect to DB
 	if (!@$db->sql_connect($dbhost, $dbuser, $dbpasswd, $dbname, $dbport, false))