diff --git a/root/includes/acp/acp_portal.php b/root/includes/acp/acp_portal.php
index b6cbf96a..d3d92828 100644
--- a/root/includes/acp/acp_portal.php
+++ b/root/includes/acp/acp_portal.php
@@ -261,13 +261,17 @@ class acp_portal
 					
 					$sql_ary = array(
 						'module_image_src'		=> request_var('module_image', ''),
-						'module_name'			=> request_var('module_name', '', true),
 						'module_image_width'	=> request_var('module_img_width', 0),
 						'module_image_height'	=> request_var('module_img_height', 0),
 						'module_group_ids'		=> $module_permission,
 						'module_status'			=> request_var('module_status', B3_MODULE_ENABLED),
 					);
 					
+					if($module_data['module_classname'] != 'latest_bots')
+					{
+						$sql_ary['module_name'] = utf8_normalize_nfc(request_var('module_name', '', true));
+					}
+					
 					// check if module image file actually exists
 					check_file_src($sql_ary['module_image_src'], '', $module_id);
 
@@ -704,11 +708,26 @@ class acp_portal
 				{
 					$submit = (isset($_POST['submit'])) ? true : false;
 					$directory = $phpbb_root_path . 'portal/modules/';
+					
+					// Create an array of already installed modules
+					$portal_modules = obtain_portal_modules(); 
+					$installed_modules = array(); 
+
+					foreach($portal_modules as $cur_module) 
+					{ 
+						$installed_modules[] = $cur_module['module_classname'];
+					} 
 
 					if ($submit)
 					{
 						$module_classname = request_var('module_classname', '');
 						$class = 'portal_' . $module_classname . '_module';
+						
+						if(in_array($module_classname, $installed_modules) && $module_classname != 'custom')
+						{
+							trigger_error($user->lang['MODULE_ADD_ONCE'] . adm_back_link($this->u_action), E_USER_WARNING);
+						}
+						
 						if (!class_exists($class))
 						{
 							include($directory . 'portal_' . $module_classname . '.' . $phpEx);
@@ -788,6 +807,11 @@ class acp_portal
 						if (preg_match('/^portal_.+\.' . $phpEx . '$/', $file))
 						{
 							$class = str_replace(".$phpEx", '', $file) . '_module';
+							if(in_array(str_replace(array('portal_', '_module'), '', $class), $installed_modules))
+							{
+								continue;
+							}
+							
 							if (!class_exists($class))
 							{
 								include($directory . $file);
diff --git a/root/language/de/mods/info_acp_portal.php b/root/language/de/mods/info_acp_portal.php
index 5cbb6857..0e08c36a 100644
--- a/root/language/de/mods/info_acp_portal.php
+++ b/root/language/de/mods/info_acp_portal.php
@@ -71,6 +71,7 @@ $lang = array_merge($lang, array(
 	'MODULE_RESET'				=> 'Modul Einstellungen zurücksetzen',
 	'MODULE_RESET_EXP'			=> 'Dies wird alle Einstellungen des Moduls auf die Standardeinstellungen zurücksetzen!',
 	'MODULE_STATUS'				=> 'Aktiviere Modul',
+	'MODULE_ADD_ONCE'			=> 'Diese Modul kann nur ein Mal hinzugefügt werden.',
 	
 	// general
 	'ACP_PORTAL'							=> 'Portal',
diff --git a/root/language/de/mods/portal/portal_latest_bots_module.php b/root/language/de/mods/portal/portal_latest_bots_module.php
index bf84dc0f..ca89d4bb 100644
--- a/root/language/de/mods/portal/portal_latest_bots_module.php
+++ b/root/language/de/mods/portal/portal_latest_bots_module.php
@@ -33,7 +33,8 @@ if (empty($lang) || !is_array($lang))
 // in a url you again do not need to specify an order e.g., 'Click %sHERE%s' is fine
 $lang = array_merge($lang, array(
 	'LATEST_BOTS'			=> 'Letzte Bots',
-	'LAST_VISITED_BOTS'		=> 'Die letzten %s Bots',
+	'LAST_VISITED_BOTS'		=> 'Die letzten Bots',
+	'LAST_VISITED_BOTS_CNT'	=> 'Die letzten %s Bots',
 	
 	// ACP
 	'ACP_PORTAL_BOTS_SETTINGS'					=> 'Einstellungen für Bot-Besuche',
diff --git a/root/language/en/mods/info_acp_portal.php b/root/language/en/mods/info_acp_portal.php
index 2249a3a1..3377a0fc 100755
--- a/root/language/en/mods/info_acp_portal.php
+++ b/root/language/en/mods/info_acp_portal.php
@@ -70,6 +70,7 @@ $lang = array_merge($lang, array(
 	'MODULE_RESET'				=> 'Reset module configuration',
 	'MODULE_RESET_EXP'			=> 'This will reset all settings to the default!',
 	'MODULE_STATUS'				=> 'Enable module',
+	'MODULE_ADD_ONCE'			=> 'This module can only be added once.',
 
 	// general
 	'ACP_PORTAL'							=> 'Portal',
diff --git a/root/language/en/mods/portal/portal_latest_bots_module.php b/root/language/en/mods/portal/portal_latest_bots_module.php
index 8eb9d290..22642d40 100644
--- a/root/language/en/mods/portal/portal_latest_bots_module.php
+++ b/root/language/en/mods/portal/portal_latest_bots_module.php
@@ -33,7 +33,8 @@ if (empty($lang) || !is_array($lang))
 // in a url you again do not need to specify an order e.g., 'Click %sHERE%s' is fine
 $lang = array_merge($lang, array(
 	'LATEST_BOTS'			=> 'Latest Bots',
-	'LAST_VISITED_BOTS'		=> 'Last %s visited bots',
+	'LAST_VISITED_BOTS'		=> 'Last visited bots',
+	'LAST_VISITED_BOTS_CNT'	=> 'Last %s visited bots',
 	
 	// ACP
 	'ACP_PORTAL_BOTS_SETTINGS'					=> 'Visiting bots settings',
diff --git a/root/portal/modules/portal_announcements.php b/root/portal/modules/portal_announcements.php
index 7f842f16..a8862893 100644
--- a/root/portal/modules/portal_announcements.php
+++ b/root/portal/modules/portal_announcements.php
@@ -352,7 +352,6 @@ class portal_announcements_module
 			'NEWEST_POST_IMG'				=> $user->img('icon_topic_newest', 'VIEW_NEWEST_POST'),
 			'READ_POST_IMG'					=> $user->img('icon_topic_latest', 'VIEW_LATEST_POST'),
 			'GOTO_PAGE_IMG'					=> $user->img('icon_post_target', 'GOTO_PAGE'),
-			'S_DISPLAY_ANNOUNCEMENTS'		=> true,
 			'S_DISPLAY_ANNOUNCEMENTS_RVS'	=> ($config['board3_show_announcements_replies_views_' . $module_id]) ? true : false,
 			'S_TOPIC_ICONS'					=> $topic_icons,
 		));
diff --git a/root/portal/modules/portal_forumlist.php b/root/portal/modules/portal_forumlist.php
index 3a4ae332..ddb8fc10 100644
--- a/root/portal/modules/portal_forumlist.php
+++ b/root/portal/modules/portal_forumlist.php
@@ -64,7 +64,6 @@ class portal_forumlist_module
 			'FORUM_NEW_IMG'			=> $user->img('forum_unread', 'NEW_POSTS'),
 			'FORUM_LOCKED_IMG'		=> $user->img('forum_read_locked', 'NO_NEW_POSTS_LOCKED'),
 			'FORUM_NEW_LOCKED_IMG'		=> $user->img('forum_unread_locked', 'NO_NEW_POSTS_LOCKED'),
-			'S_DISPLAY_PORTAL_FORUM_INDEX'	=> true,
 			'U_MARK_FORUMS'			=> ($user->data['is_registered'] || $config['load_anon_lastread']) ? append_sid("{$phpbb_root_path}index.$phpEx", 'hash=' . generate_link_hash('global') . '&mark=forums') : '',
 			'U_MCP'				=> ($auth->acl_get('m_') || $auth->acl_getf_global('m_')) ? append_sid("{$phpbb_root_path}mcp.$phpEx", 'i=main&mode=front', true, $user->session_id) : '',
 		));
diff --git a/root/portal/modules/portal_friends.php b/root/portal/modules/portal_friends.php
index 1dff111d..d244350f 100644
--- a/root/portal/modules/portal_friends.php
+++ b/root/portal/modules/portal_friends.php
@@ -97,7 +97,6 @@ class portal_friends_module
 		// Assign specific vars
 		$template->assign_vars(array(
 			'S_DISPLAY_FRIENDS'	=> $s_display_friends,
-			'S_ZEBRA_ENABLED'	=> true,
 		));
 
 		return 'friends_side.html';
diff --git a/root/portal/modules/portal_latest_bots.php b/root/portal/modules/portal_latest_bots.php
index dd405cf8..f83d5ef5 100755
--- a/root/portal/modules/portal_latest_bots.php
+++ b/root/portal/modules/portal_latest_bots.php
@@ -55,36 +55,22 @@ class portal_latest_bots_module
 		$sql = 'SELECT username, user_colour, user_lastvisit
 			FROM ' . USERS_TABLE . '
 			WHERE user_type = ' . USER_IGNORE . '
+			AND user_lastvisit > 0
 			ORDER BY user_lastvisit DESC';
 		$result = $db->sql_query_limit($sql, $config['board3_last_visited_bots_number_' . $module_id]);
-		$first = true;
+
 		while ($row = $db->sql_fetchrow($result))
 		{
-			if (!$row['user_lastvisit'] && $first == true)
-			{
-				$template->assign_vars(array(
-					'S_DISPLAY_LAST_BOTS'	=> false,
+			$template->assign_block_vars('last_visited_bots', array(
+					'BOT_NAME'			=> get_username_string('full', '', $row['username'], $row['user_colour']),
+					'LAST_VISIT_DATE'	=> $user->format_date($row['user_lastvisit']),
 				));
-			}
-			else 
-			{
-				$template->assign_var('S_DISPLAY_LAST_BOTS', true);
-
-				if($row['user_lastvisit'] > 0)
-				{
-					$template->assign_block_vars('last_visited_bots', array(
-						'BOT_NAME'			=> get_username_string('full', '', $row['username'], $row['user_colour']),
-						'LAST_VISIT_DATE'	=> $user->format_date($row['user_lastvisit']),
-					));
-				}
-			}
-			$first = false;
 		}
 		$db->sql_freeresult($result);
 
 		// Assign specific vars
 		$template->assign_vars(array(
-			'LAST_VISITED_BOTS'		=> sprintf($user->lang['LAST_VISITED_BOTS'], $config['board3_last_visited_bots_number_' . $module_id]),
+			'LAST_VISITED_BOTS'		=> ($config['board3_last_visited_bots_number_' . $module_id] != 0) ? sprintf($user->lang['LAST_VISITED_BOTS_CNT'], $config['board3_last_visited_bots_number_' . $module_id]) : $user->lang['LAST_VISITED_BOTS'],
 		));
 
 		if(!empty($row))
diff --git a/root/portal/modules/portal_news.php b/root/portal/modules/portal_news.php
index a5496ac5..00903562 100644
--- a/root/portal/modules/portal_news.php
+++ b/root/portal/modules/portal_news.php
@@ -340,7 +340,6 @@ class portal_news_module
 			'GOTO_PAGE_IMG'				=> $user->img('icon_post_target', 'GOTO_PAGE'),
 			'S_NEWEST_OR_FIRST'			=> ($config['board3_news_show_last_' . $module_id]) ? $user->lang['JUMP_NEWEST'] : $user->lang['JUMP_FIRST'],
 			'POSTED_BY_TEXT'			=> ($config['board3_news_show_last_' . $module_id]) ? $user->lang['LAST_POST'] : $user->lang['POSTED'],
-			'S_DISPLAY_NEWS'			=> true,
 			'S_DISPLAY_NEWS_RVS'		=> ($config['board3_show_news_replies_views_' . $module_id]) ? true : false,
 			'S_TOPIC_ICONS'				=> $topic_icons,
 		));
diff --git a/root/portal/modules/portal_poll.php b/root/portal/modules/portal_poll.php
index d2f8d74f..ddbc2e22 100644
--- a/root/portal/modules/portal_poll.php
+++ b/root/portal/modules/portal_poll.php
@@ -421,7 +421,6 @@ class portal_poll_module
 			$db->sql_freeresult($result);
 
 			$template->assign_vars(array(
-				'S_DISPLAY_POLL'		=> true,
 				'S_HAS_POLL'			=> $has_poll,
 				'POLL_LEFT_CAP_IMG'		=> $user->img('poll_left'),
 				'POLL_RIGHT_CAP_IMG'	=> $user->img('poll_right'),
@@ -789,7 +788,7 @@ class portal_poll_module
 							'POLL_OPTION_RESULT'	=> $pd['poll_option_total'],
 							'POLL_OPTION_PERCENT'	=> $option_pct_txt,
 							'POLL_OPTION_PCT'		=> round($option_pct * 100),
-							'POLL_OPTION_IMG'		=> $user->img('poll_center', $option_pct_txt, round($option_pct * 250)),
+							'POLL_OPTION_IMG'		=> $user->img('poll_center', $option_pct_txt, round($option_pct * 35) . 'px'),
 							'POLL_OPTION_VOTED'		=> (in_array($pd['poll_option_id'], $cur_voted_id)) ? true : false
 						));
 					}
@@ -798,7 +797,6 @@ class portal_poll_module
 			$db->sql_freeresult($result);
 
 			$template->assign_vars(array(
-				'S_DISPLAY_POLL'		=> true,
 				'S_HAS_POLL'			=> $has_poll,
 				'POLL_LEFT_CAP_IMG'		=> $user->img('poll_left'),
 				'POLL_RIGHT_CAP_IMG'	=> $user->img('poll_right'),
diff --git a/root/portal/modules/portal_statistics.php b/root/portal/modules/portal_statistics.php
index 7a3957b5..e4bdba18 100644
--- a/root/portal/modules/portal_statistics.php
+++ b/root/portal/modules/portal_statistics.php
@@ -119,7 +119,6 @@ class portal_statistics_module
 
 		// Assign specific vars
 		$template->assign_vars(array(
-			'S_DISPLAY_ADVANCED_STAT'		=> true,
 			'B3_TOTAL_POSTS'				=> sprintf($user->lang[$l_total_post_s], $total_posts),
 			'B3_TOTAL_TOPICS'				=> sprintf($user->lang[$l_total_topic_s], $total_topics),
 			'B3_TOTAL_USERS'				=> sprintf($user->lang[$l_total_user_s], $total_users),
diff --git a/root/portal/modules/portal_stylechanger.php b/root/portal/modules/portal_stylechanger.php
index 62434e6f..cb933b90 100644
--- a/root/portal/modules/portal_stylechanger.php
+++ b/root/portal/modules/portal_stylechanger.php
@@ -82,7 +82,6 @@ class portal_stylechanger_module
 		// Assign specific vars
 		$template->assign_vars(array(
 			'S_STYLE_OPTIONS'			=> ($config['override_user_style'] || $style_count < 2) ? '' : style_select($user->data['user_style']),
-			'S_DISPLAY_CHANGE_STYLE'	=> true,
 		));
 
 		return 'stylechanger_side.html';
diff --git a/root/styles/prosilver/template/portal/modules/news_center.html b/root/styles/prosilver/template/portal/modules/news_center.html
index 4cf4d5df..4f8dfc62 100644
--- a/root/styles/prosilver/template/portal/modules/news_center.html
+++ b/root/styles/prosilver/template/portal/modules/news_center.html
@@ -8,7 +8,7 @@
 				<span class="portal-corners-bottom-inner"></span></div>
 			</div>
 		<!-- ELSE -->
-			<div style="margin-bottom: <!-- IF announcements_row.S_LAST_ROW -->0px<!-- ELSE -->1px<!-- ENDIF -->" class="post <!-- IF news_row.S_ROW_COUNT is odd -->bg1<!-- ELSE -->bg2<!-- ENDIF -->">
+			<div style="margin-bottom: <!-- IF news_row.S_LAST_ROW -->0px<!-- ELSE -->1px<!-- ENDIF -->" class="post <!-- IF news_row.S_ROW_COUNT is odd -->bg1<!-- ELSE -->bg2<!-- ENDIF -->">
 				<div class="inner"><span class="portal-corners-top-inner"></span>
 					<h4 class="first"><a name="n"></a><a name="n{news_row.N_ID}"></a><!-- IF news_row.S_UNREAD_INFO --><a href="{news_row.U_VIEW_UNREAD}">{NEWEST_POST_IMG}</a><!-- ELSE --><a href="{news_row.U_LAST_COMMENTS}">{READ_POST_IMG}</a><!-- ENDIF --> {news_row.ATTACH_ICON_IMG} <!-- IF news_row.S_POLL --><strong>{L_VIEW_TOPIC_POLL}</strong><!-- ENDIF --><!-- IF news_row.TOPIC_ICON_IMG --><img src="{T_ICONS_PATH}{news_row.TOPIC_ICON_IMG}" width="{news_row.TOPIC_ICON_IMG_WIDTH}" height="{news_row.TOPIC_ICON_IMG_HEIGHT}" alt="" /> <!-- ENDIF --><a href="{news_row.U_VIEW_COMMENTS}"><strong>{news_row.TITLE}</strong></a></h4>
 					<!-- IF news_row.PAGINATION --><strong class="pagination"><span>{news_row.PAGINATION}</span></strong><!-- ENDIF -->
diff --git a/root/styles/prosilver/template/portal/modules/stylechanger_side.html b/root/styles/prosilver/template/portal/modules/stylechanger_side.html
index 3c23b993..3583b4a2 100644
--- a/root/styles/prosilver/template/portal/modules/stylechanger_side.html
+++ b/root/styles/prosilver/template/portal/modules/stylechanger_side.html
@@ -1,4 +1,4 @@
-<!-- IF S_STYLE_OPTIONS and S_DISPLAY_CHANGE_STYLE -->
+<!-- IF S_STYLE_OPTIONS -->
 {$LR_BLOCK_H_L}<!-- IF $S_BLOCK_ICON --><img src="{$IMAGE_SRC}" width="{$IMAGE_WIDTH}" height="{$IMAGE_HEIGHT}" alt="" />&nbsp;<!-- ENDIF -->{$TITLE}{$LR_BLOCK_H_R}
 	<select style="width: 150px;" name="demo" id="demo" onchange="document.location.href = this.options[this.selectedIndex].value;">
 		{STYLE_SELECT}
diff --git a/root/styles/subsilver2/theme/images/portal/portal_poll.png b/root/styles/subsilver2/theme/images/portal/portal_poll.png
new file mode 100644
index 00000000..0e7f98c2
Binary files /dev/null and b/root/styles/subsilver2/theme/images/portal/portal_poll.png differ