title: Destination URI missing from SAML 2 LogoutRequest
body: <p>I'm struggling to get an app working with ADFS and I'm getting the error "MSIS1010: Signed SAML message must have Destination URI specified." in the AD FS 2.0 Debug log.</p>
  
  <p>The opening part of the SAML request looks like this:</p>
  
  <pre><code>&lt;saml2p:LogoutRequest xmlns:saml2p="urn:oasis:names:tc:SAML:2.0:protocol"
          ID="[a-hex-string]" 
          IssueInstant="2012-12-17T15:40:45.027Z" 
          Version="2.0"&gt;
  </code></pre>
  
  <p>Am I right in thinking that there should be a Destination attribute here, too?</p>