Actually this article was published in March 2003 as a Microsoft Technical Report:
<a href="http://research.microsoft.com/research/pubs/view.aspx?tr_id=655" rel="nofollow">http://research.microsoft.com/research/pubs/view.aspx?tr_id=...</a><p>Jim Gray giving a presentation on the paper here: <a href="http://video.google.com/videoplay?docid=9016327917737413988&hl=en" rel="nofollow">http://video.google.com/videoplay?docid=9016327917737413988&...</a><p>Definitely an interesting paper, I wonder how the number have changed in the last 5 years.