NEW YORK (

TheStreet

) -- Consumer confidence unexpectedly fell in September, taking some wind out of the stock-market rally. Fear not, investors.

We've all been on edge, waiting for truly bullish signals about the economy to justify a more than a 50% increase in the benchmark

S&P 500 Index

since March's 12-year low. The S&P/Case-Shiller home-price index, also released today, showed home values in 20 U.S. metropolitan areas jumped in July. Consumer confidence had decreased in July.

Still, it was the smallest decline in Americans' confidence since January. And the reading of 53.1, a drop of 1.4, is still higher than it was in June and July 2008, when bubbles of all types hit a zenith and oil prices touched a record high.

Economists were predicting an increase of 2.9 in September after a gain of 6.7 in August broke a two-month decline. However, the confidence statistic is a fickle reading that economists rarely predict with accuracy. How could they? Surveys are used to gauge confidence, leaving the measure open to human emotions and a slew of external factors that can lead to slight up or down oscillations. September's decrease is too mild to signal a change in trend.

Considering the saturation of media coverage rehashing the terrifying events of the past year due to the one-year anniversary of Lehman's collapse, it's actually impressive that confidence didn't dip even more. During the giddy stock-market rally of the late spring and summer, it was easy to ignore the near collapse of the economic system just half a year earlier, but now that the wound has been poked and reexamined, lower confidence is justified.

Besides, reports on consumers have been contradictory. According to the Reuters/University of Michigan final index released Friday, confidence among Americans in September rose to the highest level since January 2008.

Anyway, telling periods for consumer confidence will be October and November, the beginning of the holiday shopping season. Companies including

Best Buy

(BBY) - Get Report

,

Wal-Mart

(WMT) - Get Report

and

RadioShack

(RSH)

are counting on cheaper gadgets and electronics to lure customers. An improvement in consumer confidence next month and November will mean much more for the economy. A decrease is never a positive thing. However, September's drop is nothing to get worked up about.

-- Reported by David MacDougall in Boston.

Prior to joining TheStreet.com Ratings, David MacDougall was an analyst at Cambridge Associates, an investment consulting firm, where he worked with private equity and venture capital funds. He graduated cum laude from Northeastern University with a bachelor's degree in finance and is a Level III CFA candidate.