--- a/includes/constants.php	Thu Jan 03 18:39:19 2008 -0500
+++ b/includes/constants.php	Wed Jan 16 13:55:49 2008 -0500
@@ -137,6 +137,8 @@
 //   define('AES_BLOCKSIZE', AES_BITS);
 // }
 
+// You probably don't want to change the block size because it will cause the Javascript test vectors to fail. Changing it doesn't
+// significantly increase encryption strength either.
 define('AES_BLOCKSIZE', 128);
 
 /*