Plug-In Failure in Netflix.
I updated Safari to 5.1 today, and my Netflix Instant has stopped working. It will show the circles as loading, then it may or may not flash the red Netflix screen which will disappear and in its place will be a 'Plug-in Failure' box. More often than not, it will skip the Netflix screen and either be blank or have the 'Plug-In Failure' box. I tried searching 'Netflix Plug-In Failure Safari 5.1' and all of the websites say that this problem has been fixed. Obviously not. As a side note, my Safari seems to be running slower, even though I have full bars in Airport. I don't know whether this is a symptom or a side effect. Everything else seems to be running fine.
MacBook Pro, Mac OS X (10.6.8), Safari 5.1