There is one word that will make or break the current situation.
Confidence
They are going to try and throw all this money at it , 600, 700 800 billion whatever but if confidence is lost then it will all spiral rapidly out of control.
My industry is cutting back for the first time since the late eighties. Large companies are laying people off. Not good for confidence.
You can chuck all the money you like at this problem but in the end the goverment, bank of england, bush whatever cannot and dont know how to stop the spiral if it comes quickly.
Bradford and Bingley have basically been saved from going bust. You dont need many more before a meltdown occurs.
The yanks are saying there is three trillion dollars worth of bad debt

.
No one knows what will happen because we have never been in this situation before.