Index: themes/engines/phptemplate/phptemplate.engine
===================================================================
RCS file: /cvs/drupal/drupal/themes/engines/phptemplate/phptemplate.engine,v
retrieving revision 1.54.2.4
diff -u -p -r1.54.2.4 phptemplate.engine
--- themes/engines/phptemplate/phptemplate.engine	13 Aug 2008 18:47:17 -0000	1.54.2.4
+++ themes/engines/phptemplate/phptemplate.engine	25 Feb 2009 22:54:03 -0000
@@ -257,6 +257,7 @@ function phptemplate_page($content, $sho
   $suggestion = 'page';
   $suggestions = array($suggestion);
   while ($arg = arg($i++)) {
+    $arg = str_replace(array('/', '\\', '\0'), '', $arg);
     $suggestions[] = $suggestion . '-' . $arg;
     if (!is_numeric($arg)) {
       $suggestion .= '-' . $arg;