Index: wp-settings.php
===================================================================
--- wp-settings.php	(revision 12570)
+++ wp-settings.php	(working copy)
@@ -19,7 +19,7 @@
 @ini_set('magic_quotes_sybase', 0);
 
 if ( function_exists('date_default_timezone_set') )
-	date_default_timezone_set('UTC');
+	date_default_timezone_set(ini_get('date.timezone') ? ini_get('date.timezone') : 'UTC');
 
 /**
  * Turn register globals off.