I built the official omniORB2.4.0 release in the following environment: NT4.0 ServicePack 3 MSVC 5.0 Service Release 3 GNU CygWin 2.0 b18 It compiles perfectly (make export) but generates several unresolved external symbols in: omniLifeCycleSK.o omniLifeCycle.o reDirect.o Why, and is that something to care about? --FJ