--- install.php.orig0	2007-06-14 18:25:39.000000000 +0900
+++ install.php	2007-06-14 18:30:24.000000000 +0900
@@ -535,6 +535,7 @@
     $str .= "\r\n";
 
     $str .= '$CFG->directorypermissions = 00777;  // try 02777 on a server in Safe Mode'."\r\n";
+    $str .= '$CFG->unicodecleanfilename = true;'."\r\n";
     $str .= "\r\n";
 
     $str .= 'require_once("$CFG->dirroot/lib/setup.php");'."\r\n";