More details to follow, but prices are dropping again.

Mid-day price worsening becoming more likely. 

*update

What is not evident from the publicly available news and economic headlines is why we've seen so much selling today.  Basically analysts are turning sour to a certain extent on mortgages believing that the major buyers of MBS like Fannie/Freddie and large banks/brokerages will be lowering their demand in favor of dealing with financial losses and capital issues.