Index: /home/cristi/svn/wp/wp-includes/formatting.php
===================================================================
--- /home/cristi/svn/wp/wp-includes/formatting.php	(revision 10927)
+++ /home/cristi/svn/wp/wp-includes/formatting.php	(working copy)
@@ -533,6 +533,7 @@
 		chr(197).chr(186) => 'z', chr(197).chr(187) => 'Z',
 		chr(197).chr(188) => 'z', chr(197).chr(189) => 'Z',
 		chr(197).chr(190) => 'z', chr(197).chr(191) => 's',
+		chr(200).chr(153) => 's', chr(200).chr(155) => 't',
 		// Euro Sign
 		chr(226).chr(130).chr(172) => 'E',
 		// GBP (Pound) Sign