diff --git a/setup/admin_account.php b/setup/admin_account.php
index 280ca525b2..50dc1f5abd 100644
--- a/setup/admin_account.php
+++ b/setup/admin_account.php
@@ -147,7 +147,7 @@ else
 				'template_set'  => 'idots',
 				'theme'         => 'idots',
 				'navbar_format' => 'icons',
-				'tz_offset'     => 0,
+				'tz'            => date_default_timezone_get(),
 				'dateformat'    => $lang == 'en' ? 'Y/m/d' : 'd.m.Y',
 				'timeformat'    => '24',
 				'lang'          => $lang,
diff --git a/setup/inc/class.setup.inc.php b/setup/inc/class.setup.inc.php
index 5094afcadc..efd561fc41 100644
--- a/setup/inc/class.setup.inc.php
+++ b/setup/inc/class.setup.inc.php
@@ -67,7 +67,7 @@ class setup
 	 *
 	 * @var float
 	 */
-	var $required_php_version = 5.1;
+	var $required_php_version = 5.2;
 	/**
 	 * PHP Version recommended for eGroupware
 	 *
diff --git a/setup/inc/class.setup_process.inc.php b/setup/inc/class.setup_process.inc.php
index def3150ff8..19f0ada5b1 100755
--- a/setup/inc/class.setup_process.inc.php
+++ b/setup/inc/class.setup_process.inc.php
@@ -223,7 +223,7 @@ class setup_process
 			$current_config['webserver_url'] = '/egroupware';
 			$egroupwareDirName = 'egroupware';
 		}
-		if(!$is_windows) 
+		if(!$is_windows)
 		{
 			if(@is_dir('/tmp'))
 			{
@@ -249,10 +249,6 @@ class setup_process
 			$current_config['files_dir'] = 'c:\\Program files\\'.$egroupwareDirName.'\\'.$GLOBALS['egw_setup']->ConfigDomain.'\\files';
 			$current_config['backup_dir'] = 'c:\\Program files\\'.$egroupwareDirName.'\\'.$GLOBALS['egw_setup']->ConfigDomain.'\\backup';
 		}
-		$datetime =& CreateObject('phpgwapi.egw_datetime');
-		$current_config['tz_offset'] = $datetime->getbestguess();
-		unset($datetime);
-
 		// RalfBecker: php.net recommend this for security reasons, it should be our default too
 		$current_config['usecookies'] = 'True';