A surge in business conditions last month has prompted National Australia Bank to revise up its growth forecast for this year,National Australia Bank's closely watched monthly business survey shows conditions saw the biggest improvement on record in October boosted by stronger sales and profits. Confidence fell though dragged down by concerns over the outlook for unemployment and future consumer spending.Despite this uncertainties,Nab lifted its growth forecast slightly to 2.9 percent this financial year which is at the top of the Reserve Bank's forecast.The local share market was held back by sharp falls in mining stocks after a number of banks cut their forecasts for the iron ore price.By the close,the All Ords shed 7 points and the index and in the Asx shed 200 index.Atlas iron gave back some of yesterday's gain,closing down 8 percent. Going the other way,the Uranium producer Paladim Energy the top performer today and rose another 7 percent.And the autralian dollar right now is up against the green back, buy 86.2 US cents.