Silverlight problems with Netflix
1. Move the following to the trash:
HD>Library>App Support>Microsoft>Silverlight
HD>Library>App Support>Microsoft>Playready
HD>Library>Internet Plug-ins>Silverlight.plugin
Empty trash, reboot, go on Netflix and try to stream movie, it will ask you to reinstall silverlight. After the installation I was able to watch movies instantly. Hope this saves someone the 4 hours spent.
Macbook Air 11.6" 1.6Ghz, Mac OS X (10.6.6)