Macbook Pro i7 with 8 gigs ram. Took Safari 5 on a little trip to the Apple site to view the FaceTime video. Got about 5 seconds of video followed by a freeze frame and beach ball for 20 seconds. Then the video zoomed forward super fast to where it would have been after 20 seconds. Then it beachballed again. Reloaded the page and it played fine. Similar issues with the iPhone 4 video.
Not impressed. Can I have Safari 4 back now please?