title: Memory Leak when navigating?
body: <p>I have created a simple wp7 application which contains 2 pages both with a button and an image on it(and 2 pointless radio buttons).:</p>
  
  <pre><code>&lt;!--ContentPanel - place additional content here--&gt;
      &lt;Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0"&gt;
          &lt;RadioButton Content="RadioButton" Height="80" Name="radioButton1" VerticalAlignment="Top" Margin="0,0,268,0" /&gt;
          &lt;RadioButton Content="RadioButton" Height="80" HorizontalAlignment="Left" Margin="231,0,0,0" Name="radioButton2" VerticalAlignment="Top" Width="204" /&gt;
          &lt;Button Content="Button" Height="97" HorizontalAlignment="Left" Margin="137,510,0,0" Name="button1" VerticalAlignment="Top" Width="331" Click="button1_Click"/&gt;
          &lt;Image Height="418" HorizontalAlignment="Left" Margin="12,86,0,0" Name="image1" Stretch="Fill" VerticalAlignment="Top" Width="444" Source="http://brucew.files.wordpress.com/2011/10/stones-some-girls.jpg"/&gt;
      &lt;/Grid&gt;
  </code></pre>
  
  <p>And when I navigate back and forth the memory consumption increases up to 30-35.
  I'm navigating back with the Back button all the time .</p>
  
  <p>Now I'm afraid that a more complex application with image selector, bingmaps and about 10 other pages will reach the 90 megs barrier pretty easy.</p>
  
  <p>So my question is why is this happening with my test application, is this something I should be concerned about?</p>