title: URL requests with [object] in place of parameter values
body: <p>We're seeing requests to our server with the literal [object] replacing the values where parameters should be.</p>
  
  <p>For example: http://example.com/users/[object]</p>
  
  <p>I've found some suggestions that it might be something to do with IE9 but we can't quite nail it down. See: <a href="http://www.webmasterworld.com/webmaster/4560505.htm" rel="nofollow">http://www.webmasterworld.com/webmaster/4560505.htm</a></p>
  
  <p>Has anyone else seen this behaviour? Have you managed to nail down what the problem is?</p>