title: ScriptManager AsyncPostBackTimeout working locally, but not on remote clients
body: <p>On one aspx page in ASP.NET 3.5 C# application, when I select certain input parameters and click the Submit button, a back-end database query runs for about 6 minutes and updates the gridview with its results. This gridview is in UpdatePanel which has the Submit button as AsyncPostBackTrigger. </p>
  
  <p>Since the default timeout is 90 seconds, I increased ScriptManager AsyncPostBackTimeout to 600 (10 minutes, just to be safe). When I run the app locally (localhost), the gridview is updated as expected. But when I access this app from a different client machine, it keeps running for 10 minutes and doesn't update the gridview at the end, even though the backend query has finished in 6 minutes.</p>
  
  <pre><code>http://localhost/appname/page.aspx (works)
  http://another_ip/appname/page.aspx (same web server, different client machine, doesn't work).
  </code></pre>
  
  <p>Please help. Thanks.</p>