http://blogs.msdn.com/jscript/archive/2007/08/12/windows-script-5-7-released-for-windows-2000-windows-xp-and-windows-2003-server.aspx
I suspect this means that someone running IE6 might now also have JS 5.7. In this case your sniff code won't define the needed ctor.

eugene said on August 14, 2007

objREQ = window.ActiveXObject == false ? new XMLHttpRequest() : new ActiveXObject("Microsoft.XMLHTTP") ;

Sorry, comments are closed for this post. If you have any further questions or comments, feel free to send them to me directly.
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