diff --git a/main/document/download.php b/main/document/download.php
index 762aad4bb6..b9b818a168 100644
--- a/main/document/download.php
+++ b/main/document/download.php
@@ -1,4 +1,4 @@
-<?php // $Id: download.php 17433 2008-12-23 10:56:06Z derrj $
+<?php // $Id: download.php 17795 2009-01-17 19:31:51Z spyroux $
 /*
 ==============================================================================
 	Dokeos - elearning and course management software
@@ -48,18 +48,13 @@
 ==============================================================================
 */
 
-session_cache_limiter('public');
+session_cache_limiter('none');
 
 include('../inc/global.inc.php');
 $this_section=SECTION_COURSES;
 
 include(api_get_path(LIBRARY_PATH).'document.lib.php');
 
-// IMPORTANT to avoid caching of documents
-header('Expires: Wed, 01 Jan 1990 00:00:00 GMT');
-header('Cache-Control: public');
-header('Pragma: no-cache');
-
 //protection
 api_protect_course_script();
 
@@ -108,4 +103,4 @@ if (!$is_allowed_to_edit &&
 }
 
 DocumentManager::file_send_for_download($full_file_name);
-?>
\ No newline at end of file
+?>
diff --git a/main/exercice/hotspot.inc.php b/main/exercice/hotspot.inc.php
index 3d616413e6..8ebabbaa13 100644
--- a/main/exercice/hotspot.inc.php
+++ b/main/exercice/hotspot.inc.php
@@ -25,6 +25,7 @@
 * 	@version $Id: admin.php 10680 2007-01-11 21:26:23Z pcool $
 */
 
+session_cache_limiter("none");
 
 include_once('../inc/global.inc.php');
 
@@ -63,4 +64,4 @@ foreach($temp as $value)
 {
 	echo $value . ' ';
 }
-?>
\ No newline at end of file
+?>
diff --git a/main/exercice/hotspot_actionscript.as.php b/main/exercice/hotspot_actionscript.as.php
index 6d31abdad8..7e6cc9adb8 100644
--- a/main/exercice/hotspot_actionscript.as.php
+++ b/main/exercice/hotspot_actionscript.as.php
@@ -24,6 +24,7 @@
 * 	@author Toon Keppens
 * 	@version $Id: admin.php 10680 2007-01-11 21:26:23Z pcool $
 */
+session_cache_limiter("none");
 
 include('exercise.class.php');
 include('question.class.php');
@@ -100,4 +101,4 @@ for ($i; $i <= 12; $i++)
 
 // Output
 echo $output."&nmbrTries=".$nmbrTries."&done=done";
-?>
\ No newline at end of file
+?>