[omniORB] omniNames can't run on my FreeBSD 2.2.7

[simbah@ns1.ukdw.ac.id]

I have installing omniORB-2.2.0 packages where i got that from FreeBSD site. When i try to run omniNames, 
i got some error messages like this :
/usr/libexec/ld.so: Undefined symbol "_pthread_key_create" called from omniNames:/usr/local/lib/libomnithread.so.1.0 at 0x818d148

For additional information, i have installed too, pthread on my FreeBSD, and configured that lib with ldconfig -m /usr/lib.

Can you help me?

Thanks

budi susanto