tedster - 7:55 pm on Oct 27, 2011 (gmt 0)

I don't know about any approaching Panda flux - but I also see outrageous changes over short periods of time. I'm beginning to suspect some kind of statistical sampling is at play. There may be several versions of the algo in live use at any time. Some could show more frequently than others - and then the stats for each algo version would allow Google to "learn" more quickly what works better for their user.