diff --git a/app/views/problems/stat.html.erb b/app/views/problems/stat.html.erb
--- a/app/views/problems/stat.html.erb
+++ b/app/views/problems/stat.html.erb
@@ -13,6 +13,7 @@
   </tr>
   <% count = 0 %>
   <% @submissions.each do |sub| %>
+    <% next unless sub.user %>
     <tr class="<%= (count % 2 ==0) ? "info-even" : "info-odd" %>">
     <td><%= sub.user.login %></td>
     <td><%= sub.user.full_name if sub.user %></td>
diff --git a/app/views/users/profile.html.haml b/app/views/users/profile.html.haml
--- a/app/views/users/profile.html.haml
+++ b/app/views/users/profile.html.haml
@@ -6,6 +6,11 @@
   $('#submission_table').tablesorter({widgets: ['zebra','filter']});
   });
 
+:css
+  .fix-width {
+    font-family: Droid Sans Mono,Consolas, monospace, mono, Courier New, Courier;
+  }
+
 %h1= @user.full_name + ' Profile'
 
 %h2 Basic info
@@ -28,12 +33,13 @@
       %th Score
   %tbody
     - @submission.each do |s|
+      - next unless s.problem
       %tr
         %td= link_to "#{s.id}", controller: "graders", action: "submission", id: s.id
         %td= s.problem.name
         %td= s.problem.full_name
         %td= s.language.pretty_name
-        %td{style: 'font-family: Droid Sans Mono,Consolas, monospace, mono'}= s.grader_comment
+        %td.fix-width= s.grader_comment
         %td= s.points/s.problem.full_score * 100
 
 
diff --git a/config/application.rb.SAMPLE b/config/application.rb.SAMPLE
--- a/config/application.rb.SAMPLE
+++ b/config/application.rb.SAMPLE
@@ -60,5 +60,6 @@
     config.assets.version = '1.0'
 
     config.assets.precompile += ['announcement_refresh.js','effects.js','site_update.js','graders.css','problems.css']
+    config.assets.precompile += ['new.js','tablesorter-theme.cafe.css']
   end
 end
diff --git a/db/schema.rb b/db/schema.rb
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -15,12 +15,12 @@
 
   create_table "announcements", :force => true do |t|
     t.string   "author"
-    t.text     "body"
+    t.text     "body",         :limit => 16777215
     t.boolean  "published"
-    t.datetime "created_at",                      :null => false
-    t.datetime "updated_at",                      :null => false
-    t.boolean  "frontpage",    :default => false
-    t.boolean  "contest_only", :default => false
+    t.datetime "created_at",                                          :null => false
+    t.datetime "updated_at",                                          :null => false
+    t.boolean  "frontpage",                        :default => false
+    t.boolean  "contest_only",                     :default => false
     t.string   "title"
     t.string   "notes"
   end
@@ -50,19 +50,19 @@
   end
 
   create_table "descriptions", :force => true do |t|
-    t.text     "body"
+    t.text     "body",       :limit => 16777215
     t.boolean  "markdowned"
-    t.datetime "created_at", :null => false
-    t.datetime "updated_at", :null => false
+    t.datetime "created_at",                     :null => false
+    t.datetime "updated_at",                     :null => false
   end
 
   create_table "grader_configurations", :force => true do |t|
     t.string   "key"
     t.string   "value_type"
     t.string   "value"
-    t.datetime "created_at",  :null => false
-    t.datetime "updated_at",  :null => false
-    t.text     "description"
+    t.datetime "created_at",                      :null => false
+    t.datetime "updated_at",                      :null => false
+    t.text     "description", :limit => 16777215
   end
 
   create_table "grader_processes", :force => true do |t|
@@ -97,10 +97,10 @@
     t.integer  "sender_id"
     t.integer  "receiver_id"
     t.integer  "replying_message_id"
-    t.text     "body"
+    t.text     "body",                :limit => 16777215
     t.boolean  "replied"
-    t.datetime "created_at",          :null => false
-    t.datetime "updated_at",          :null => false
+    t.datetime "created_at",                              :null => false
+    t.datetime "updated_at",                              :null => false
   end
 
   create_table "problems", :force => true do |t|
@@ -142,7 +142,7 @@
 
   create_table "sessions", :force => true do |t|
     t.string   "session_id"
-    t.text     "data"
+    t.text     "data",       :limit => 16777215
     t.datetime "updated_at"
   end
 
@@ -163,19 +163,16 @@
     t.integer  "user_id"
     t.integer  "problem_id"
     t.integer  "language_id"
-    t.text     "source"
+    t.text     "source",           :limit => 16777215
     t.binary   "binary"
     t.datetime "submitted_at"
     t.datetime "compiled_at"
-    t.text     "compiler_message"
+    t.text     "compiler_message", :limit => 16777215
     t.datetime "graded_at"
     t.integer  "points"
-    t.text     "grader_comment"
+    t.text     "grader_comment",   :limit => 16777215
     t.integer  "number"
     t.string   "source_filename"
-    t.float    "max_runtime"
-    t.integer  "peak_memory"
-    t.integer  "effective_code_length"
   end
 
   add_index "submissions", ["user_id", "problem_id", "number"], :name => "index_submissions_on_user_id_and_problem_id_and_number", :unique => true
@@ -190,10 +187,10 @@
 
   create_table "test_pairs", :force => true do |t|
     t.integer  "problem_id"
-    t.text     "input",      :limit => 16777215
-    t.text     "solution",   :limit => 16777215
-    t.datetime "created_at",                     :null => false
-    t.datetime "updated_at",                     :null => false
+    t.text     "input",      :limit => 2147483647
+    t.text     "solution",   :limit => 2147483647
+    t.datetime "created_at",                       :null => false
+    t.datetime "updated_at",                       :null => false
   end
 
   create_table "test_requests", :force => true do |t|
@@ -204,13 +201,13 @@
     t.string   "output_file_name"
     t.string   "running_stat"
     t.integer  "status"
-    t.datetime "updated_at",       :null => false
+    t.datetime "updated_at",                           :null => false
     t.datetime "submitted_at"
     t.datetime "compiled_at"
-    t.text     "compiler_message"
+    t.text     "compiler_message", :limit => 16777215
     t.datetime "graded_at"
     t.string   "grader_comment"
-    t.datetime "created_at",       :null => false
+    t.datetime "created_at",                           :null => false
     t.float    "running_time"
     t.string   "exit_status"
     t.integer  "memory_usage"