aristotle - 1:26 pm on May 10, 2010 (gmt 0)
One of my sites may be a victim of this new layout. Google traffic has dropped about 12% even though rankings for the major keywords are essentially unchanged.
I think the main culprit is the "Latest" option in the menu. My pages that are in the top 5 for normal search disappear when "Latest" is clicked, replaced by blog posts and newspaper articles. I wrote my articles 2-4 years ago and have never altered most of them, so they are not "Latest"