Regarding shared memory ... two presentations were made at Summer 86 USENIX, one by AT&T, other by CMU. Try to get a copy of the Conference Proceedings to see what AT&T has done to 5.3 for reasonable shared libraries. -------- Dave Buck ihnp4!amdahl!dlb!dave (408)972-2825 D.L.Buck&Assoc.,Inc. 6920 Santa Teresa Blvd. San Jose, Calif.95119