diff --git a/Gemfile b/Gemfile
index 400cdab3..f5d88fb4 100644
--- a/Gemfile
+++ b/Gemfile
@@ -85,7 +85,7 @@ if File.exist?(database_file)
     adapters.each do |adapter|
       case adapter
       when 'mysql2'
-        gem "mysql2", "~> 0.3.11", :platforms => [:mri, :mingw]
+        gem "mysql2", "= 0.3.11", :platforms => [:mri, :mingw]
         gem "activerecord-jdbcmysql-adapter", :platforms => :jruby
       when 'mysql'
         gem "mysql", "~> 2.8.1", :platforms => [:mri, :mingw]
diff --git a/app/views/welcome/index.html.erb b/app/views/welcome/index.html.erb
index 79001a3f..16a4cbf2 100644
--- a/app/views/welcome/index.html.erb
+++ b/app/views/welcome/index.html.erb
@@ -54,7 +54,7 @@
 		<ul class="d-p-projectlist">
 			<% projects = find_miracle_project(10, 3) %>
 			<% projects.map do |project| %>
-			<% cache cache_key_for_project(project) do %>
+			<!--<% cache cache_key_for_project(project) do %> -->
 			<li style="position:relative;height:6em;" class='<%= cycle("odd", "even") %>'>
 				<div style="float: left;">
 					<%= image_tag(get_project_avatar(project), :class => "avatar-4") %>
@@ -75,7 +75,7 @@
 			        :id => "tooltip-#{project.id}" %>
 				</div>
 			</li>
-		<% end %>
+           <!--<%end %> -->
 			<% end; reset_cycle  %>
 		</ul>
 	</div>
@@ -88,7 +88,7 @@
 			<div class="user-message-box-list" style="margin-top: 10px;">
 				<%activities = find_all_activities%>
 			<% activities.each do |event| %>
-				<% cache cache_key_for_event(event) do %>
+                  <!--<% cache cache_key_for_event(event) do %> -->
 			<li style="display: block;height:60px; padding-bottom: 4px;">
 				<div class="inner-right" style="float: left; height: 100%; ">
 					<%= image_tag url_to_avatar(event.event_author), :class => "avatar-3" %>
@@ -99,7 +99,7 @@
 				<p style="margin-top: 4px;"><span style="color: rgb(172, 174, 177)"><%= l(:field_updated_on) %><%= time_tag_welcome event.event_datetime %>前</span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="float: right; color: rgb(172, 174, 177);"><%= show_event_reply event %></span></p>
 				</div>
 			</li>
-			    <% end %><!-- cache -->
+                      <!--<%end %> --><!-- cache -->
 			    <% end  %>	
 			</div>
 		</ul>
@@ -107,7 +107,7 @@
 
 <div class="right" style="float: right; width: 48%; "> 
 	<ul class="welcome-message-list">
-		<% cache 'forum_links' do %>
+      <!--<% cache 'forum_links' do %> -->
 		<div class="forum-topic" style="height: 25px; width: 98%; margin-left: 2px;">
 		  <h3 style="color: rgb(21, 188, 207);">
 			<strong>贴吧动态</strong>
@@ -115,11 +115,11 @@
 			<%= link_to "我要反馈" , suggestion_send_path, {:class => 'orangeButton idea_btn', :style => "color: #EEEEEE" }%></h3>
 			<span style="margin-top: -30px;float: right; display: block;"><%= link_to "更多>>", forums_path %></span>
 		</div>
-		<% end %>
+          <!--<%end %> -->
 		<div class="welcome-box-list-new memo_activity">
 			<% topics = find_new_forum_topics(7) %>
 		<% topics.includes(:forum, :last_reply, :author).each do |topic|%>
-			<% cache cache_key_for_topic(topic) do %>
+              <!--<% cache cache_key_for_topic(topic) do %> -->
 			<li class="message-brief-intro">
 				<div class='memo_title text_nowrap'>
 					<%= link_to '['+topic.forum.name + ']',forum_path(topic.forum),:class => 'memo_Bar_title' %><%= link_to topic.subject.truncate(30, omission: '...'), topic.event_url,title: topic.subject %>
@@ -139,7 +139,7 @@
 					</span>
 				</div>
 			</li>
-		<% end %> <!-- cache -->
+                  <!--<%end %> --> <!-- cache -->
 		<% end %>
 		</div>
 	</ul>