Having problems watching Netflix on Windows Media Center after installing IE9 RC?
Then check out this new KB article (KB2512239)
“After you install Windows Internet Explorer 9 Release Candidate (RC) on a computer that is running Windows 7, the Netflix application in Windows Media Center may encounter an error when it initiates video playback”
There is the usual Microsoft Fix it as well (50624)
thanks to DanMa for the tip