diff --git a/libs/Smarty.class.php b/libs/Smarty.class.php
index 47b89a8b..09c90363 100644
--- a/libs/Smarty.class.php
+++ b/libs/Smarty.class.php
@@ -464,7 +464,7 @@ class Smarty
      *
      * @var string
      */
-    var $_version              = '2.6.6-dev-2';
+    var $_version              = '2.6.6-dev-3';
 
     /**
      * current template inclusion depth
diff --git a/libs/internals/core.read_cache_file.php b/libs/internals/core.read_cache_file.php
index 2ab42811..ecb14708 100644
--- a/libs/internals/core.read_cache_file.php
+++ b/libs/internals/core.read_cache_file.php
@@ -48,10 +48,11 @@ function smarty_core_read_cache_file(&$params, &$smarty)
         return false;
     }
 
-    $cache_split = explode("\n", $params['results'], 2);
-    $cache_header = $cache_split[0];
-
-    $_cache_info = unserialize($cache_header);
+    $_contents = $params['results'];
+    $_info_start = strpos($_contents, "\n") + 1;
+    $_info_len = (int)substr($_contents, 0, $_info_start - 1);
+    $_cache_info = unserialize(substr($_contents, $_info_start, $_info_len));
+    $params['results'] = substr($_contents, $_info_start + $_info_len);
 
     if ($smarty->caching == 2 && isset ($_cache_info['expires'])){
         // caching by expiration time
@@ -99,7 +100,6 @@ function smarty_core_read_cache_file(&$params, &$smarty)
             return false;
         }
     }
-    $params['results'] = $cache_split[1];
     $content_cache[$params['tpl_file'].','.$params['cache_id'].','.$params['compile_id']] = array($params['results'], $_cache_info);
 
     $smarty->_cache_info = $_cache_info;
diff --git a/libs/internals/core.write_cache_file.php b/libs/internals/core.write_cache_file.php
index d7a82849..72f785b7 100644
--- a/libs/internals/core.write_cache_file.php
+++ b/libs/internals/core.write_cache_file.php
@@ -62,7 +62,8 @@ function smarty_core_write_cache_file($params, &$smarty)
     $smarty->_cache_info['cache_serials'] = $smarty->_cache_serials;
 
     // prepend the cache header info into cache file
-    $params['results'] = serialize($smarty->_cache_info)."\n".$params['results'];
+    $_cache_info = serialize($smarty->_cache_info);
+    $params['results'] = strlen($_cache_info) . "\n" . $_cache_info . $params['results'];
 
     if (!empty($smarty->cache_handler_func)) {
         // use cache_handler function