Growth in Japan evaporated in the three months to September, sparking renewed concern about an economy not long out of a decade-long trough.
Oil prices and a weak dollar mean exports are having a tough time
Output in the period grew just 0.1%, an annual rate of 0.3%.
Exports - the usual engine of recovery - faltered, while domestic demand stayed subdued and corporate investment also fell short.
The growth falls well short of expectations, but does mark a sixth straight quarter of expansion.
The economy had stagnated throughout the 1990s, experiencing only brief spurts of expansion amid long periods in the doldrums.
One result was deflation - prices falling rather than rising - which made Japanese shoppers cautious and kept them from spending.
The effect was to leave the economy more dependent than ever on exports for its recent recovery.
But high oil prices have knocked 0.2% off the growth rate, while the falling dollar means products shipped to the US are becoming relatively more expensive.
The performance for the third quarter marks a sharp downturn from earlier in the year.
The first quarter showed annual growth of 6.3%, with the second showing 1.1%, and economists had been predicting as much as 2% this time around.
"Exports slowed while capital spending became weaker," said Hiromichi Shirakawa, chief economist at UBS Securities in Tokyo.
"Personal consumption looks good, but it was mainly due to temporary factors such as the Olympics.
"The amber light is flashing."
The government may now find it more difficult to raise taxes, a policy it will have to implement when the economy picks up to help deal with Japan's massive public debt.