IBM Corp already finds that it is having to play catch-up in the multimedia world, and announced yesterday that it is working with Apple Computer Inc and Scientific Atlanta on a blueprint for an open on-line architecture aimed at interactive multimedia services using Kaleida Labs Inc’s ScriptX scripting language, Apple’s OpenDoc and IBM’s System and Distributed System Object Model on PowerPC. PC Week hears that Kaleida is considering more lay-offs, and that Scientific Atlanta may absorb the development effort and staff. IBM is also forming a unit to pursue the business of linking cable television and telephone lines with interactive networks, the Wall Street Journal reported.