Pundits are still concerned that the worldwide credit crunch will not abate until the full extent of the U.S. sub-prime housing crisis is fully known.

Justin Urquart Stewart, at Seven Invesment Management said, “The market cannot start to get any composure until we can find out how much damage has been done.”

The prospect of millions of borrowers — mostly poor, black Americans — defaulting on payments they could never afford, has fueled concerns of a credit crunch, making it difficult for almost anyone to borrow money. The interbank lending market has been particularly badly hit.

In the three months to the end of June, Standard & Poor calculated that U.S. house prices fell by 3.2 percent, the steepest decline since 1987 when its records began.