Quantum Corp has reported fourth quarter net profit up 46.6% at $38.5m on turnover that rose 25.3% at $635.0m; net profit for the year to March 31 was down 97.1% at $2.7m, after a non-recurring charge of $22.7m, on turnover that rose 25.6% to $2,131m. Net earnings per share rose 40% to $0.70 in the quarter, and fell 97% to $0.06 in the year.