Data General Corp is finding the transition to open systems at a time of recession extremely painful with a second quarter loss of $55m after a $48m charge for another 1,000 lay-offs: turnover was down 14% at $274m, in part because the sale of the Japanese subsidiary cut volume by $19m; the company blamed the disappointing results on competitive pricing pressures, which have cut profits, as well as the weak worldwide economy; the company says it continues to be very cautious about the remainder of 1992; AViiON sales continue to grow, but we are not satisfied with overall revenues, the company declared.