title: Redirect to different domain URL (google app engine logout) doesn't work from silverlight + javascript
body: <p>I see the following behavior:</p>
  
  <p>When I call javascript XMLHttpRequest/open/send from silverlight, for a  URL that eventually causes HTTP redirect to a different domain (logout URL in google app engine), than the silverlight application was loaded from, the browser doesn't follow the redirect.</p>
  
  <p>When I go to the same URL either manually from the browser, or using a link on the same page where the silverlight application is, everything work fine - the browser follows redirect correctly.</p>
  
  <p>Does anyone know the cause for such difference in behavior / is there any workaround / configuration to avoid it?</p>
  
  <p>Thanks!</p>