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Silverlight won't work in FF4.0, cant stream movies from Netflix. SL works ok in IE 7.0 What is wrong with FF??

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I used FF to stream movies from Netflix until Dec2010. I have updated to FF 4.0 and now I can't down stream Netflix movies. I get an error from Netflix that says Silverlight is not working and must reinstall.

BUT......Netflix and Silverlight works fine with IE 7.0 What happened to FF4.0..and Silverlight??

I used FF to stream movies from Netflix until Dec2010. I have updated to FF 4.0 and now I can't down stream Netflix movies. I get an error from Netflix that says Silverlight is not working and must reinstall. BUT......Netflix and Silverlight works fine with IE 7.0 What happened to FF4.0..and Silverlight??

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I just updated to the new Firefox and it wouldn't stream my Netflix movies. I was getting an error code related to Silverlight. I called Netflix and they had me enable my history and that fixed the problem. Their tech support, said the history/cookies must be enabled to stream movies. Hope this helps! (I also followed the prompt on the screen from Netflix with this error code to delete my old saved certificates, etc.)