Food inflation fell to a three and-a-half-month low of 9.42 per cent for the week ended March 5 as prices of potato and pulses declined. The drop in inflation, which is still not in comfort zone, is viewed as a breather for the government grappling with high price rise of essential commodities. Food inflation in the previous week was 9.52 per cent.After remaining in double digit for several weeks, food inflation came down to single digit in the last week of February. The RBI in its quarterly review today revised upwards the inflation forecast for March-end to 8 per cent from 7 per cent projected earlier.