title: IE deletes cookies that should not be deleted
body: <p>I have a problem with IE8 and IE9.
  I login to a certain web site (site A), then on the other tab login to another site(site B). And when I logout from site A, IE deletes it's cookies (and this is right) and login cookies from site B, so that I have to login to site B again.</p>
  
  <p>I need to resolve situation with site B. Because I cannot change site A. </p>
  
  <p>This problem happens not for every site B, but only for a few ones, e.g. Gmail. For the others it works just fine. And Firefox doesn't have such problem either. Sorry, unfortunately I cannot give A site URL and login/password because it isn't in public availability. </p>
  
  <p>Can anyone have any idea what it is?</p>
  
  <p>I would be very grateful for any piece of advice.</p>
  
  <p>PS. I've just found out that when I logout from site A, IE deletes all cookies with "EXPIRES" field equals "At the end of the Session", not just from it own domain, but from all other domains too.</p>
  
  <p>Does anybody know why IE behaves so?</p>