Although I am not sure about the rootcause and remedy of the problem that you posted, we may try the workaround that I did for one such CORBA related problems in starting the J2EE server. (*) Edit the file <J2EE_HOME>/config/orb.properties (*) Modify the value of the port i.e, change port=1050 to port=1055
Please let me know, if this solves your problem.
Only those who will risk going too far can possibly find out how far one can go !!!