Index: issue.rb
===================================================================
--- issue.rb    (revision 10240)
+++ issue.rb    (working copy)
@@ -91,7 +91,8 @@
         "(#{table_name}.is_private = #{connection.quoted_false} OR #{table_name}.author_id = #{user.id} OR #{table_name}.assigned_to_id IN (#{user_ids.join(',')}))"
       when 'own'
         user_ids = [user.id] + user.groups.map(&:id)
-        "(#{table_name}.author_id = #{user.id} OR #{table_name}.assigned_to_id IN (#{user_ids.join(',')}))"
+        "(#{table_name}.author_id = #{user.id} OR #{table_name}.assigned_to_id IN (#{user_ids.join(',')}) OR (SELECT count(*) FROM #{Watcher.table_name}
+WHERE watchable_id = #{table_name}.id AND user_id = #{user.id}) > 0)"
       else
         '1=0'
       end
@@ -107,7 +108,7 @@
       when 'default'
         !self.is_private? || self.author == user || user.is_or_belongs_to?(assigned_to)
       when 'own'
-        self.author == user || user.is_or_belongs_to?(assigned_to)
+        self.author == user || user.is_or_belongs_to?(assigned_to) || self.watched_by?(user)
       else
         false
       end