My thought is this. Has Google outsourced quality testers?
God save us if they did, but I wouldn't doubt it, remember?, it's all about the money. It's bad enough that google is such a poor judge of quality sites, now we get to have our US sites judged by a completely foreign society and their associated mores.
BTW - Anybody notice the web itself acting strangely today? Usually I get a downpour of spam every day, but hardly a drop today. Traffic is very NON interactive.