When John Leyden was a computer consultant on Wall Street, Y2K issues were a major ordeal. At one insurance company, he worked with a group summoned out of retirement to explain and help fix the software they had written 25 years earlier. At one foreign bank branch, his team had to recreate programs from scratch under a clean-up-or-close-up threat from federal regulators. At other banks, he dealt with strict deadlines and a dizzying assortment of computer equipment.

Mr. Leyden, 39, who became the Southern District’s systems manager two months ago, finds Y2K issues in the Manhattan-based federal trial courts far more manageable.