diff -r beea10a56132 -r 01076ed49ffc app/views/projects/explore.html.erb
--- a/app/views/projects/explore.html.erb
+++ b/app/views/projects/explore.html.erb
@@ -1,23 +1,32 @@
+<% content_for :header_tags do %>
+    <%= stylesheet_link_tag 'redmine_tags', :plugin => 'redmine_tags' %>
+<% end %>
 
+<% cache(:action => 'explore', :action_suffix => 'tags', :expires_in => 1.hour) do %>
 <h2><%= l(:label_explore_projects) %></h2>
-
   <div class="tags box">
   <h3><%=l(:label_project_tags_all)%></h3>
     <%= render :partial => 'projects/tagcloud' %>
   </div>
+<% end %>
+
 <div class="splitcontentleft">
+  <% cache(:action => 'explore', :action_suffix => 'busy_institutions', :expires_in => 1.hour) do %>
   <div class="institutions box">
   <h3><%=l(:label_institutions_busy)%></h3>
     <%= render :partial => 'activities/busy_institution' %>
   </div>
+  <% end %>
   <div class="projects box">
   <h3><%=l(:label_project_latest)%></h3>
     <%= render :partial => 'projects/latest' %>
   </div>
 </div>
 <div class="splitcontentright">
+  <% cache(:action => 'explore', :action_suffix => 'busy_projects', :expires_in => 1.hour) do %>
   <div class="projects box">
   <h3><%=l(:label_projects_busy)%></h3>
     <%= render :partial => 'activities/busy' %>
   </div>
+  <% end %>
 </div>