Setting a lifetime when writing to cache is useless. Lifetimes are on…

…ly checked when reading from cache.

classes/kohana/fragment.php

@@ -78,7 +78,7 @@ public static function save()
 			$fragment = ob_get_flush();
 
 			// Cache the fragment
-			Kohana::cache($cache_key, $fragment, Fragment::$lifetime);
+			Kohana::cache($cache_key, $fragment);
 		}
 	}