Hi, After i upgraded my application to omniORB 4.0.1, it seems OK but there is a warning message: WARNING -- using ORBid omniORB3 (should be omniORB4) Anybody can tell me what does it mean? -- Song Li VRAC(Virtual Reality Application Center),Iowa State University Email: lisong at vrac.iastate.edu Homepage: http://www.vrac.iastate.edu/~lisong