title: Facebook load the canvas in the tab with some accounts
body: <p>I'm experiencing a weird thing in an apps I'm developping. </p>
  
  <p>The tab is loading the canvas. In the apps parameter I've filled the right path to both canvas and tabs.</p>
  
  <p>Here is the apache log for the app admina account while loading the tab: </p>
  
  <pre><code>172.16.109.9 - - [01/Sep/2011:15:48:30 +0200] "GET / HTTP/1.1" 200 1593 "http://static.ak.facebook.com/platform/page_proxy.php?v=4" "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.2 (KHTML, like Gecko) Chrome/15.0.865.0 Safari/535.2"
  </code></pre>
  
  <p>I tried with another account, tester of the apps, he load the right file. Here is the apache log : </p>
  
  <pre><code>172.16.109.9 - - [01/Sep/2011:15:52:59 +0200] "POST /tab HTTP/1.1" 200 1314 "_https://s-static.ak.facebook.com/platform/page_proxy.php?v=4" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:6.0.1) Gecko/20100101 Firefox/6.0.1"
  </code></pre>
  
  <p>Is this a known Facebook glitch ?</p>
  
  <p>Thanks everyone :)</p>