title: IE not updating display after callpback pane updates the DOM
body: <p>I have an update panel in an ascx page using .Net 3.5.</p>
  
  <p>The user enters data, initiates a callback, and ajax updates the DOM.</p>
  
  <p>Usually everything's all hunky dory. Once in a while the DOM gets updated and IE doesn't bother refreshing the display. The entire updated area appears to be blank.</p>
  
  <p>Once the user does something that would trigger a refresh, like resizing the window, the data instantly appears on the screen, but not until then.</p>
  
  <p>Why is this? What could cause it? How can it be fixed?</p>