php module and CORBA

I'm currently writing a php4 extension module with omniORB (multithreaded CORBA) When I compile php in standalone with my php module everythings work fine. But when I compile php as an apache module my module hang on the following line: orb = CORBA::ORB_init(nb,params,"omniORB3"); I saw in the omniORB archive that some user have same problem with apache module: the ORB_init method hang when it is call from a non-worker process. Is some one known how to call ORB_init from the worker process of apache throw a php module? Eric CALLIER