diff --git a/main/exercice/exercise_result.class.php b/main/exercice/exercise_result.class.php
index c72855344c..3adaba89e9 100755
--- a/main/exercice/exercise_result.class.php
+++ b/main/exercice/exercise_result.class.php
@@ -116,7 +116,7 @@ class ExerciseResult
 				  		AND cuser.course_code=te.exe_cours_id ORDER BY te.exe_cours_id ASC, ce.title ASC, te.exe_date ASC";
 
 			$hpsql="SELECT ".(api_is_western_name_order() ? "CONCAT(tu.firstname,' ',tu.lastname)" : "CONCAT(tu.lastname,' ',tu.firstname)").", tth.exe_name,
-								tth.exe_result , tth.exe_weighting, UNIX_TIMESTAMP(tth.exe_date), tu.email, tu.user_id
+								tth.exe_result , tth.exe_weighting, tth.exe_date, tu.email, tu.user_id
 					FROM $TBL_TRACK_HOTPOTATOES tth, $TBL_USER tu
 					WHERE  tu.user_id=tth.exe_user_id AND tth.exe_cours_id = '" . Database :: escape_string($cid) . " $user_id_and '
 					ORDER BY tth.exe_cours_id ASC, tth.exe_date ASC";
diff --git a/main/mySpace/myStudents.php b/main/mySpace/myStudents.php
index c0e3fd8a99..c4e5c9dacd 100755
--- a/main/mySpace/myStudents.php
+++ b/main/mySpace/myStudents.php
@@ -598,14 +598,14 @@ if ($timezone !== null) {
 				else $css_class = "row_even";
 		
 				$i++;
-
+				
 				// csv export content
 				$csv_content[] = array (
 					api_html_entity_decode(stripslashes($lp_name), ENT_QUOTES, $charset),
 					api_time_to_hms($total_time),
 					$score . '%',
 					$progress,
-					api_convert_and_format_date($start_time, "%Y-%m-%d")
+					date('Y-m-d h:i:s', $start_time)
 				);
 ?>
 					<tr class="<?php echo $css_class;?>">
@@ -637,7 +637,9 @@ if ($timezone !== null) {
 						<td align="center">
 							<?php
 				if ($start_time != '' && $start_time > 0) {
-					echo api_convert_and_format_date($start_time, DATE_FORMAT_SHORT);
+					//Do not change with api_convert_and_format_date, because this value came from the lp_item_view table 
+					//which implies several other changes not a priority right now								
+					echo date('Y-m-d h:i:s', $start_time); 
 				} else {
 					echo '-';
 				}
diff --git a/main/tracking/courseLog.php b/main/tracking/courseLog.php
index c7256418bf..640abb6479 100755
--- a/main/tracking/courseLog.php
+++ b/main/tracking/courseLog.php
@@ -1,17 +1,16 @@
 <?php //$id: $
-/* For licensing terms, see /dokeos_license.txt */
+/* For licensing terms, see /license.txt */
 /**
-==============================================================================
 *	@author Thomas Depraetere
 *	@author Hugues Peeters
 *	@author Christophe Gesche
 *	@author Sebastien Piraux
 *	@author Toon Keppens (Vi-Host.net)
 *
-*	@package dokeos.tracking
-==============================================================================
+*	@package chamilo.tracking
 */
-/**
+
+/*
  *	INIT SECTION
  */
 $pathopen = isset($_REQUEST['pathopen']) ? $_REQUEST['pathopen'] : null;
@@ -467,14 +466,9 @@ if ($_GET['studentlist'] == 'false') {
 
 	    $all_datas = array();
 	    $course_code = $_course['id'];
-
-
-
-
+	    
 		$user_ids = array_keys($a_students);
-
-
-
+		
 		$table = new SortableTable('users_tracking', array('TrackingCourseLog','get_number_of_users'), array('TrackingCourseLog','get_user_data'), (api_is_western_name_order() xor api_sort_by_first_name()) ? 3 : 2);
 
 		$parameters['cidReq'] 		= Security::remove_XSS($_GET['cidReq']);
diff --git a/main/tracking/courseLogCSV.php b/main/tracking/courseLogCSV.php
index bf48d026f8..7766743136 100755
--- a/main/tracking/courseLogCSV.php
+++ b/main/tracking/courseLogCSV.php
@@ -1,37 +1,13 @@
 <?php
-/*
-==============================================================================
-	Dokeos - elearning and course management software
-
-	Copyright (c) 2004-2006 Dokeos S.A.
-	Copyright (c) 2003 Ghent University (UGent)
-	Copyright (c) 2001 Universite catholique de Louvain (UCL)
-	Author: Frederic Vauthier (frederic.vauthier@dokeos.com)
-
-	For a full list of contributors, see "credits.txt".
-	The full license can be read in "license.txt".
-
-	This program is free software; you can redistribute it and/or
-	modify it under the terms of the GNU General Public License
-	as published by the Free Software Foundation; either version 2
-	of the License, or (at your option) any later version.
-
-	See the GNU General Public License for more details.
-
-	Contact address: Dokeos, 44 rue des palais, B-1030 Brussels, Belgium
-	Mail: info@dokeos.com
-==============================================================================
-*/
+/* For licensing terms, see /license.txt */
 /**
-==============================================================================
 *	@author Thomas Depraetere
 *	@author Hugues Peeters
 *	@author Christophe Gesche
 *	@author Sebastien Piraux
 *	@author Toon Keppens (Vi-Host.net)
 *
-*	@package dokeos.tracking
-==============================================================================
+*	@package chamilo.tracking
 */
 
 // TODO: Is this file deprecated?
diff --git a/main/tracking/course_access_details.php b/main/tracking/course_access_details.php
old mode 100644
new mode 100755
index 71ed7f567d..ecbc7ab323
--- a/main/tracking/course_access_details.php
+++ b/main/tracking/course_access_details.php
@@ -1,43 +1,18 @@
 <?php
-/*
-==============================================================================
-	Dokeos - elearning and course management software
-
-	Copyright (c) 2004 Dokeos S.A.
-	Copyright (c) 2003 Ghent University (UGent)
-	Copyright (c) 2001 Universite catholique de Louvain (UCL)
-
-	For a full list of contributors, see "credits.txt".
-	The full license can be read in "license.txt".
-
-	This program is free software; you can redistribute it and/or
-	modify it under the terms of the GNU General Public License
-	as published by the Free Software Foundation; either version 2
-	of the License, or (at your option) any later version.
-
-	See the GNU General Public License for more details.
-
-	Contact address: Dokeos, 44 rue des palais, B-1030 Brussels, Belgium
-	Mail: info@dokeos.com
-==============================================================================
-*/
+/* For licensing terms, see /license.txt */
 /**
-==============================================================================
 *	@author Thomas Depraetere
 *	@author Hugues Peeters
 *	@author Christophe Gesche
 *	@author Sebastien Piraux
 *
-*	@package dokeos.tracking
-==============================================================================
+*	@package chamilo.tracking
 */
 
 // TODO: Is this file deprecated?
 
 /*
-==============================================================================
 		INIT SECTION
-==============================================================================
 */
 $reqdate = $_REQUEST['reqdate'];
 $period = $_REQUEST['period'];
diff --git a/main/tracking/logins_details.php b/main/tracking/logins_details.php
index 4d210cddab..271ef5f943 100755
--- a/main/tracking/logins_details.php
+++ b/main/tracking/logins_details.php
@@ -1,35 +1,13 @@
 <?php
-/*
-==============================================================================
-	Dokeos - elearning and course management software
-
-	Copyright (c) 2004 Dokeos S.A.
-	Copyright (c) 2003 Ghent University (UGent)
-	Copyright (c) 2001 Universite catholique de Louvain (UCL)
-
-	For a full list of contributors, see "credits.txt".
-	The full license can be read in "license.txt".
-
-	This program is free software; you can redistribute it and/or
-	modify it under the terms of the GNU General Public License
-	as published by the Free Software Foundation; either version 2
-	of the License, or (at your option) any later version.
-
-	See the GNU General Public License for more details.
-
-	Contact address: Dokeos, 44 rue des palais, B-1030 Brussels, Belgium
-	Mail: info@dokeos.com
-==============================================================================
-*/
+/* For licensing terms, see /license.txt */
 /**
-==============================================================================
 *	@author Thomas Depraetere
 *	@author Hugues Peeters
 *	@author Christophe Gesche
 *	@author Sebastien Piraux
 *
 *	@package dokeos.tracking
-==============================================================================
+
 */
 
 // TODO: Is this file deprecated?
diff --git a/main/tracking/personnalLog.php b/main/tracking/personnalLog.php
index 1a9ca5915a..e260ec785c 100755
--- a/main/tracking/personnalLog.php
+++ b/main/tracking/personnalLog.php
@@ -1,35 +1,12 @@
 <?php
-/*
-==============================================================================
-	Dokeos - elearning and course management software
-
-	Copyright (c) 2004 Dokeos S.A.
-	Copyright (c) 2003 Ghent University (UGent)
-	Copyright (c) 2001 Universite catholique de Louvain (UCL)
-
-	For a full list of contributors, see "credits.txt".
-	The full license can be read in "license.txt".
-
-	This program is free software; you can redistribute it and/or
-	modify it under the terms of the GNU General Public License
-	as published by the Free Software Foundation; either version 2
-	of the License, or (at your option) any later version.
-
-	See the GNU General Public License for more details.
-
-	Contact address: Dokeos, 44 rue des palais, B-1030 Brussels, Belgium
-	Mail: info@dokeos.com
-==============================================================================
-*/
+/* For licensing terms, see /license.txt */
 /**
-==============================================================================
 *	@author Thomas Depraetere
 *	@author Hugues Peeters
 *	@author Christophe Gesche
 *	@author Sebastien Piraux
 *
-*	@package dokeos.tracking
-==============================================================================
+*	@package chamilo.tracking
 */
 
 // TODO: Is this file deprecated?
diff --git a/main/tracking/toolaccess_details.php b/main/tracking/toolaccess_details.php
old mode 100644
new mode 100755
index bdc59c7a4c..0c304089a7
--- a/main/tracking/toolaccess_details.php
+++ b/main/tracking/toolaccess_details.php
@@ -1,27 +1,5 @@
 <?php // $Id: toolaccess_details.php 20472 2009-05-11 10:02:06Z ivantcholakov $
-/*
-==============================================================================
-	Dokeos - elearning and course management software
-
-	Copyright (c) 2004 Dokeos S.A.
-	Copyright (c) 2003 Ghent University (UGent)
-	Copyright (c) 2001 Universite catholique de Louvain (UCL)
-
-	For a full list of contributors, see "credits.txt".
-	The full license can be read in "license.txt".
-
-	This program is free software; you can redistribute it and/or
-	modify it under the terms of the GNU General Public License
-	as published by the Free Software Foundation; either version 2
-	of the License, or (at your option) any later version.
-
-	See the GNU General Public License for more details.
-
-	Contact address: Dokeos, 44 rue des palais, B-1030 Brussels, Belgium
-	Mail: info@dokeos.com
-==============================================================================
-*/
-
+/* For licensing terms, see /license.txt */
 // TODO: Is this file deprecated?
 
 /**
diff --git a/main/tracking/userLog.php b/main/tracking/userLog.php
index 24e2029f6c..7d1bdc45fb 100755
--- a/main/tracking/userLog.php
+++ b/main/tracking/userLog.php
@@ -1,41 +1,15 @@
 <?php // $Id: userLog.php 21626 2009-06-26 12:19:41Z pcool $
-/*
-==============================================================================
-	Dokeos - elearning and course management software
-
-	Copyright (c) 2004-2009 Dokeos SPRL
-	Copyright (c) 2003 Ghent University (UGent)
-	Copyright (c) 2001 Universite catholique de Louvain (UCL)
-	Copyright (c) Roan Embrechts (Vrije Universiteit Brussel)
-    Copyright (c) Sebastien Piraux  <piraux_seb@hotmail.com>
-
-	For a full list of contributors, see "credits.txt".
-	The full license can be read in "license.txt".
-
-	This program is free software; you can redistribute it and/or
-	modify it under the terms of the GNU General Public License
-	as published by the Free Software Foundation; either version 2
-	of the License, or (at your option) any later version.
-
-	See the GNU General Public License for more details.
-
-	Contact: Dokeos, 181 rue Royale, B-1000 Brussels, Belgium, info@dokeos.com
-==============================================================================
-*/
+/* For licensing terms, see /license.txt */
 
 // TODO: Is this file deprecated?
 
 /**
-==============================================================================
-* @package dokeos.tracking
+* @package chamilo.tracking
 * @todo clean code - structure is unclear and difficult to modify
-==============================================================================
 */
 
 /*
-==============================================================================
 		INIT SECTION
-==============================================================================
 */
 $uInfo = $_REQUEST['uInfo'];
 $view  = $_REQUEST['view'];
diff --git a/main/tracking/userlogCSV.php b/main/tracking/userlogCSV.php
index f1ad639858..e8bae2385b 100755
--- a/main/tracking/userlogCSV.php
+++ b/main/tracking/userlogCSV.php
@@ -1,28 +1,5 @@
 <?php
-/*
-==============================================================================
-	Dokeos - elearning and course management software
-
-	Copyright (c) 2004-2006 Dokeos S.A.
-	Copyright (c) 2003 Ghent University (UGent)
-	Copyright (c) 2001 Universite catholique de Louvain (UCL)
-	Copyright (c) Roan Embrechts (Vrije Universiteit Brussel)
-    Copyright (c) Sebastien Piraux  <piraux_seb@hotmail.com>
-
-	For a full list of contributors, see "credits.txt".
-	The full license can be read in "license.txt".
-
-	This program is free software; you can redistribute it and/or
-	modify it under the terms of the GNU General Public License
-	as published by the Free Software Foundation; either version 2
-	of the License, or (at your option) any later version.
-
-	See the GNU General Public License for more details.
-
-	Contact: Dokeos, 181 rue Royale, B-1000 Brussels, Belgium, info@dokeos.com
-==============================================================================
-*/
-
+/* For licensing terms, see /license.txt */
 // TODO: Is this file deprecated?
 
 /**