Index: includes/install.core.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/install.core.inc,v
retrieving revision 1.4
diff -u -p -r1.4 install.core.inc
--- includes/install.core.inc	1 Mar 2010 07:39:12 -0000	1.4
+++ includes/install.core.inc	12 Mar 2010 06:30:55 -0000
@@ -716,7 +716,7 @@ function install_verify_requirements(&$i
     if ($install_state['interactive']) {
       drupal_set_title(st('Requirements problem'));
       $status_report = theme('status_report', array('requirements' => $requirements));
-      $status_report .= st('Check the error messages and <a href="!url">proceed with the installation</a>.', array('!url' => request_uri()));
+      $status_report .= st('Check the error messages and <a href="@url">proceed with the installation</a>.', array('@url' => check_url(request_uri())));
       return $status_report;
     }
     else {
Index: includes/theme.maintenance.inc
===================================================================
RCS file: /cvs/drupal/drupal/includes/theme.maintenance.inc,v
retrieving revision 1.54
diff -u -p -r1.54 theme.maintenance.inc
--- includes/theme.maintenance.inc	25 Feb 2010 20:57:39 -0000	1.54
+++ includes/theme.maintenance.inc	12 Mar 2010 06:30:55 -0000
@@ -145,7 +145,7 @@ function theme_install_page($variables) 
     $title = count($messages['error']) > 1 ? st('The following errors must be resolved before you can continue the installation process') : st('The following error must be resolved before you can continue the installation process');
     $variables['messages'] .= '<h3>' . $title . ':</h3>';
     $variables['messages'] .= theme('status_messages', array('display' => 'error'));
-    $variables['content'] .= '<p>' . st('Check the error messages and <a href="!url">try again</a>.', array('!url' => request_uri())) . '</p>';
+    $variables['content'] .= '<p>' . st('Check the error messages and <a href="@url">try again</a>.', array('@url' => check_url(request_uri()))) . '</p>';
   }
 
   // Special handling of warning messages