diff --git a/app/models/grader_process.rb b/app/models/grader_process.rb
--- a/app/models/grader_process.rb
+++ b/app/models/grader_process.rb
@@ -32,7 +32,11 @@
   
   def report_active(task=nil)
     self.active = true
-    self.task_id = task.id
+    if task!=nil
+      self.task_id = task.id
+    else
+      self.task_id = nil
+    end
     self.task_type = task.class.to_s
     self.save
   end                
diff --git a/app/views/main/_submission.html.haml b/app/views/main/_submission.html.haml
--- a/app/views/main/_submission.html.haml
+++ b/app/views/main/_submission.html.haml
@@ -9,7 +9,7 @@
     - if submission.graded_at!=nil
       = "Graded at #{format_short_time(submission.graded_at)}." 
       %br/
-      = "Score: #{submission.points} " if Configuration['ui.show_score']
+      = "Score: #{(submission.points*100/submission.problem.full_score).to_i} " if Configuration['ui.show_score']
       = " [" 
       %tt
         = submission.grader_comment
diff --git a/app/views/main/_submission_short.html.haml b/app/views/main/_submission_short.html.haml
--- a/app/views/main/_submission_short.html.haml
+++ b/app/views/main/_submission_short.html.haml
@@ -7,7 +7,7 @@
     = format_short_time(submission.submitted_at)
   - else
     = "Graded at #{format_short_time(submission.graded_at)}, " 
-    = "score: #{submission.points} " if Configuration['ui.show_score']
+    = "score: #{(submission.points*100/submission.problem.full_score).to_i} " if Configuration['ui.show_score']
     = " [" 
     %tt
       = submission.grader_comment
diff --git a/app/views/messages/list.html.haml b/app/views/messages/list.html.haml
--- a/app/views/messages/list.html.haml
+++ b/app/views/messages/list.html.haml
@@ -1,6 +1,18 @@
 = user_title_bar(@user)
 
-%h3 Your Messages
+.announcementbox
+  %span{:class => 'title'}
+    How to submit clarification requests
+  .announcement
+    %p
+      :markdown
+        The clarification requests should be phrased as yes/no questions.  
+        The answers will be one of the following:
+        (1) **YES**,
+        (2) <b>NO</b>,
+        (3) **ANSWERED IN TASK DESCRIPTION (EXPLICITLY OR IMPLICITLY)**,
+        (4) **INVALID QUESTION**, and
+        (5) **NO COMMENT**.
 
 - form_for 'message', nil, :url => { :action => 'create'} do |f|
   %p 
diff --git a/app/views/test/index.html.erb b/app/views/test/index.html.erb
--- a/app/views/test/index.html.erb
+++ b/app/views/test/index.html.erb
@@ -2,6 +2,11 @@
 
 <h2>Test Interface</h2>
 
+<p>
+  <b>Note:</b> Test interface will be disabled in the last 30 minutes
+   of the contest time on your site.
+</p>
+
 <% if @problems.length==0 %>
   There is no submission
 <% else %>