Both 404 and 200 status on same page
<p>If i "Fiddle" my website i see that a few of my pages present with a 404 error status and then directly afterwards it presents with a 200 status. 
The page loads correctly with out ever displaying the "page cannot be found" page. </p>

<p>Example of fiddler result set.</p>

<p><strong>Result    Protocol URL<br>
404 HTTP    Test/Admin/undefined<br>
200 HTTP    Test/Admin/Testpage.aspx</strong></p>

<p>Can anyone please tell me why this would be??
This also does not always happen. On first load of the page the status is 200. But if i click a button or redirect to the page again then i end up with the above example.</p>
