I bet you’re wondering what I did..
Well go to the Microsoft SilverLight 3 SDK page here: Here
but you won’t be downloading the SDK.. you’ll scroll down the page to Instructions and find the link for this:
“To build Silverlight 3 applications, you can install Silverlight 3 for Developers here.”
Or simply install this after uninstall all of the silverlights from you control panel.
That will let you download essentially what is Silverlight 3 or to be exact it’s version#: 3.0.50106.0
and voila you now have Netflix that works!
If I were you I would make a backup of that file you downloaded somewhere as I have done myself..
Enjoy your movies!!