diff --git a/main/admin/user_list.php b/main/admin/user_list.php
index 1ffe240731..1686149df7 100755
--- a/main/admin/user_list.php
+++ b/main/admin/user_list.php
@@ -11,7 +11,6 @@ $language_file = array ('registration','admin');
 $cidReset = true;
 require_once '../inc/global.inc.php';
 require_once api_get_path(LIBRARY_PATH).'formvalidator/FormValidator.class.php';
-require_once api_get_path(LIBRARY_PATH).'security.lib.php';
 require_once api_get_path(LIBRARY_PATH).'xajax/xajax.inc.php';
 
 global $_configuration;
@@ -861,7 +860,7 @@ $form->addElement('style_submit_button', 'submit',get_lang('Search'),'class="sea
 
 echo '<div class="actions" style="width:100%;">';
 if (api_is_platform_admin()) {
-	echo '<span style="float:right; padding-top:7px;">'.
+	echo '<span style="float:right;">'.
 		 '<a href="'.api_get_path(WEB_CODE_PATH).'admin/user_add.php">'.Display::return_icon('new_user.png',get_lang('AddUsers'),'','32').'</a>'.
 		 '</span>';
 }
diff --git a/main/inc/introductionSection.inc.php b/main/inc/introductionSection.inc.php
index 5c5dfec4bb..d2183ea566 100755
--- a/main/inc/introductionSection.inc.php
+++ b/main/inc/introductionSection.inc.php
@@ -154,7 +154,7 @@ if ($intro_dispForm) {
 	echo '</div>';
 }
 
-$style_introduction_section = 'style="margin-left:10%;margin-right:10%;"';
+
 $thematic_description_html = '';
 
 if ($tool == TOOL_COURSE_HOMEPAGE && !isset($_GET['intro_cmdEdit'])) {
@@ -177,8 +177,17 @@ if ($tool == TOOL_COURSE_HOMEPAGE && !isset($_GET['intro_cmdEdit'])) {
 	}
 
 	if (!empty($thematic_advance_info)) {
-
-		$style_introduction_section = 'style="margin-left:10%;margin-right:10%; margin-bottom:30px;"';
+		
+		if ($is_allowed_to_edit) {			
+			$style_introduction_section = 'style="margin-left:10%;margin-right:10%; margin-top:30px;" ';			
+		} else {
+			if (empty($intro_content)) {
+				$style_introduction_section = 'style="margin-left:10%;margin-right:10%; "';
+			} else {
+				$style_introduction_section = 'style="margin-left:10%;margin-right:10%;" margin-top:30px;';
+			}	
+		}
+		
 		$thematic_advance = get_lang('CourseThematicAdvance').'&nbsp;'.$thematic->get_total_average_of_thematic_advances().'%';		
 		if (api_is_allowed_to_edit(null, true)) {
 			//$thematic_advance = '<a href="'.api_get_path(WEB_CODE_PATH).'course_progress/index.php?action=thematic_details&'.api_get_cidreq().'">'.get_lang('CourseThematicAdvance').'&nbsp;'.$thematic->get_total_average_of_thematic_advances().'%</a>';
@@ -215,12 +224,12 @@ if ($tool == TOOL_COURSE_HOMEPAGE && !isset($_GET['intro_cmdEdit'])) {
 
 	} 
 }
-
+$style_introduction_section = 'style="margin-left:10%; margin-right:10%;"';
 echo '<div '.$style_introduction_section.'>';
 if ($intro_dispDefault) {
 	//$intro_content = make_clickable($intro_content); // make url in text clickable
 	$intro_content = text_filter($intro_content); // parse [tex] codes
-	if (!empty($intro_content) || !empty($thematic_description_html))	{
+	if (!empty($intro_content))	{
 		echo "<table align=\"center\"><tr><td>$intro_content</td></tr></table>";
 	}
 }
diff --git a/main/social/profile.php b/main/social/profile.php
index f98bb64bd7..9a812e3857 100755
--- a/main/social/profile.php
+++ b/main/social/profile.php
@@ -81,9 +81,9 @@ function toogle_course (element_html, course_code){
 	var content = \'social_content\' + id_elem[1];
 	if (my_image=="nolines_plus.gif") {
 		$(id_button).attr("src","../img/nolines_minus.gif"); var action = "load_course";
-		$("div#"+content).show("slow");
+		$("div#"+content).show("fast");
 	} else {
-		$("div#"+content).hide("slow");
+		$("div#"+content).hide("fast");
 		$(id_button).attr("src","../img/nolines_plus.gif"); var action = "unload";
 		return false;
 	}
@@ -96,7 +96,6 @@ function toogle_course (element_html, course_code){
 		url: "'.api_get_path(WEB_AJAX_PATH).'social.ajax.php?a=toogle_course",
 		data: "load_ajax="+id_elem+"&action="+action+"&course_code="+course_code,
 		success: function(datos) {
-		 //$("div#"+name_div_id).hide("slow");
 		 $("div#"+content).html(datos);
 		}
 	});