"It's a very provocative observation to say that one's state of anxiety at a fixed point in time can in some way foretell an increased risk of cardiovascular disease 20 years down the road, " says Dr. Gregory Dehmer, M.

CNN: Study: Anxiety in youth linked to heart attacks later on

But as raising interest rates to protect the currency means slowing the economy, a government might at some point decide that the pain of maintaining the fixed exchange rate is not worthwhile.

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Some said they had anticipated receiving more money while others decided they had fixed up their homes to the point that they'd stay, she said.

WSJ: Sandy Spurs Call to Buy Up Homes

While the illustration may have moved some investors from zero to a token weight in foreign, many investors and advisors fixed on the optimum point at 20 to 30 percent as a maximum foreign weighting.

FORBES: How Much International?

Once the fault was finally fixed the FTSE 100 index of leading shares fell some 120 points to 6, 307 - its lowest point for more than two months.

BBC: London shares chaos

Even if it never does, owning a home may still be a wealth building proposition for two reasons: you are locking in your housing costs with a fixed-rate mortgage while rents continue to rise, and your mortgage will be paid off at some point in the future.

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