Yep. I'm more than a bit suspicious that it's your option 2, given that it's been "Greece"..."Italy"..."Ireland"..."Greece"...Euro-disaster talk for months now without the kind of precipitous one-day decline that just happened to precede this announcement.
Well, just before the precipitous fall on the markets there were letters between various parties in Europe (European Commission President, European Central Bank President and the German Chancellor) which showed that they had some fundamental disagreements about what to do - vastly scale up or not - with the European sovereign bailout fund. That seems to have spooked the markets somewhat.
