The Silverlight Streaming service is now back online, and you should be able to render your videos and Silverlight applications from the service as before the outage.
However in order to restore availability we had to take some action that will possibly negatively impact the video playback rendering performance in some geographical regions, in particular Western Europe. The other regions should not see a significant deprecation in performance.
We are continuing to work on narrowing down the issue behind the instability of the last few days. Once again, allow me to thank you again for your patience and whoever took the time to report the issue.