title: Web pages that a long time to load keep on reloading, just on vista on my work n/w
body: <p>I have a curious problem at work which I've been struggling with since the advent of Windows Vista.</p>
  
  <p>We send our own email newsletter out to 40,000+ people once a week.  The sending code has been in place for years, it's in classic ASP/VBscript called through a browser and simply loops through each email address, sending it to them.  The page takes 40 mins or more to run, so has a big timeout value to allow it to do so.</p>
  
  <p>All well and good, suddenly, after Windows Vista is installed on the work PCs, the email sending page behaved oddly - after a period of time it seems to reload the page, endlessly, so the first 20% of our users get multiple copies of the newsletter until we kill the process!</p>
  
  <p>If we run the code on an XP machine in the on the same office network, it works fine.  If we run it on Vista <em>outside</em> the office, so, say, on my own ISP, then it also works fine!</p>
  
  <p>Note, same effect in IE and FF...</p>
  
  <p>So, something about my office network and Vista is causing this...</p>
  
  <p>I recently re-wrote the newsletter code so it would split the task into chunks of 100 users at a time, hoping this would fix it, but my most recent test shows that the office n/w vista machine once again reloads the same page over any over, even though it takes 1/10th of the time to run...</p>
  
  <p>Does anyone have any ideas what it might be, how I can prove it, or, better, how I can get round it?</p>
  
  <p>Thanks for your advice :)</p>