title: 'JSON' is undefined' issue in IE but not chrome
body: <p>I am getting the following error with my jquery ajax call in IE9, where I am using Json.stringify().</p>
  
  <p>Microsoft JScript runtime error: 'JSON' is undefined</p>
  
  <p>The same function was working for me till yesterday and still works on my colleagues machine and on chrome on my machine. But for no apparent reason has stopped working on my machine today.</p>
  
  <p>May you please help me understand, what is causing it?</p>
  
  <p>Thanks!</p>