Gorgwatcher - 10:01 am on Apr 7, 2010 (gmt 0)
adding &sa=2 in the end donates that you have clicked the search button in footer of google instead the button with top search box
And yes I can confirm that on [18.104.22.168...] caffeine is appearing and disappearing with each click on search button.
Also California IP's has the most odd results. A Major shuffle not just one two results replacing each other.
And yesterday ..it was again a major role our then reverted similarly like 1st April roll out.