sfowler, I'm not seeing any
PR changes. However, I have seen more than normal volatility in Google keyword tracking since that last "adjustment" and there have been reports here and there that the recent virus/worm attack knocked some of the datacenters offline, so that queries were drawing from other than the normal datacenter for that region. If true, you may be seeing the fallout from that rather than a real
PR update (or not, of course).
rocos, those
PR predictors are fun toys but nothing to bet the mortgage on... with that particular one, I have yet to see a result that wasn't the same on every datacenter so I don't know what it's doing...