Inspired by this thread: http://www.open-mpi.org/community/lists/users/2007/11/4547.php
Brian kindly donated a patch to make Linux ECONNREFUSED behavior better in the oob TCP. I filed CMR 1192 to get this into 1.2.5. It's not critical for 1.2.5, but it would be nice to have.
-- Jeff Squyres Cisco Systems