diff --git a/app/models/problem.rb b/app/models/problem.rb
index c474a34..62f32fa 100644
--- a/app/models/problem.rb
+++ b/app/models/problem.rb
@@ -116,7 +116,9 @@ class Problem
       self.last_deploy_at = if (last_deploy = app.deploys.where(:environment => self.environment).last)
         last_deploy.created_at
       end
-      self.save if persisted?
+      collection.update({'_id' => self.id},
+                        {'$set' => {'app_name' => self.app_name,
+                          'last_deploy_at' => self.last_deploy_at}})
     end
   end
 
diff --git a/spec/fabricators/problem_fabricator.rb b/spec/fabricators/problem_fabricator.rb
index ced1126..80d8fa0 100644
--- a/spec/fabricators/problem_fabricator.rb
+++ b/spec/fabricators/problem_fabricator.rb
@@ -1,8 +1,12 @@
 Fabricator(:problem) do
-  app!
-  comments      []
+  app! { Fabricate(:app) }
+  comments { [] }
 end
 
 Fabricator(:problem_with_comments, :from => :problem) do
-  comments(:count => 3) { |parent, i| Fabricate(:comment, :err => parent) }
+  after_create { |parent|
+    3.times do
+      Fabricate(:comment, :err => parent)
+    end
+  }
 end
diff --git a/spec/models/problem_spec.rb b/spec/models/problem_spec.rb
index 99bef1e..c39db3f 100644
--- a/spec/models/problem_spec.rb
+++ b/spec/models/problem_spec.rb
@@ -1,6 +1,29 @@
 require 'spec_helper'
 
 describe Problem do
+  describe "Fabrication" do
+    context "Fabricate(:problem)" do
+      it 'should be valid' do
+        Fabricate.build(:problem).should be_valid
+      end
+      it 'should have no comment' do
+        lambda do
+          Fabricate(:problem)
+        end.should_not change(Comment, :count)
+      end
+    end
+
+    context "Fabricate(:problem_with_comments)" do
+      it 'should be valid' do
+        Fabricate.build(:problem_with_comments).should be_valid
+      end
+      it 'should have 3 comments' do
+        lambda do
+          Fabricate(:problem_with_comments)
+        end.should change(Comment, :count).by(3)
+      end
+    end
+  end
   context '#last_notice_at' do
     it "returns the created_at timestamp of the latest notice" do
       err = Fabricate(:err)
--
libgit2 0.21.2