I'm starting to wonder if they just made a mistake. Perhaps there's some bug in the system that just didn't show up until they rolled it out.
They definitely made mistakes in the Florida update and Googleguy and others seemed to think we were just bleating about nothing. Then eventually Matt (I mean Googleguy) twigged that something might not be as they expected and invited some of us to send him examples. Once they saw what was happening in these specific examples they made changes which sorted the problem for some of us.
If anyone from Google is listening perhaps it is time for you to give folks here some way to show you examples of where Panda is making mistakes.