diberry - 5:26 am on May 25, 2013 (gmt 0)
I saw most of my changes two weeks ago, not this week. I saw large brands be handed the top spots, including multiple pages, while I dropped down to below them.
Was this around the 9th? Because my Penguinized/Pandalyzed site had a significant partial recovery at that point - I do think something happened around that time.