deadsea - 3:51 pm on Oct 11, 2012 (gmt 0)
With a full day of data from yesterday, it appears that my site was helped by this update as well. My site hasn't had much change seasonally for the last 3 years, so I can compare numbers from January until now.
January 18th: 100%
Last week: 52%
So yesterday was 40% better than last week, but not nearly enough to get me to January levels. I may have crawled out from under the page layout problem but there may be other things. It looks like my site had smaller (10 to 20% drops) around July 2nd and August 19th. I'll have to corellate those to other algorithm changes.