reference the right thing in mobile views

app/views/comments/_comment.mobile.haml

@@ -5,7 +5,7 @@
 %li.comment{:data=>{:guid=>comment.id}, :class => ("hidden" if(defined? hidden))}
   .right
     %span.time
-      = comment.created_at ? t('ago', :time => time_ago_in_words(comment.created_at)) : time_ago_in_words(Time.now)
+      = comment.created_at ? time_ago_in_words(comment.created_at) : time_ago_in_words(Time.now)
 
   = person_image_link(comment.person)
   .content

app/views/notifications/index.mobile.haml

@@ -17,6 +17,6 @@
                 %b= notification_people_link(note)
               = object_link(note)
               .time
-                = time_ago_in_words(obj.created_at)
+                = time_ago_in_words(note.created_at)
 
   = will_paginate @notifications

app/views/shared/_stream_element.mobile.haml

@@ -5,7 +5,7 @@
 .stream_element{:data=>{:guid=>post.id}}
   .right
     %span.time
-      = time_ago_in_words(obj.created_at)
+      = time_ago_in_words(post.created_at)
 
   = person_image_link(post.person, :size => :thumb_small)