Sparc Solaris 2.4 failing

Hello,

Sorry if this is not the right place to report this problem.
I compiled Postgres v6.4.2 in a Sparc Solaris 2.4 system
with gcc 2.7.2. I used the following configure command:
./configure --with-perl --with-odbc
   --with-template=solaris_solaris_gcc
It compiled without errors, I installed it and ran the
initdb command succesfully. But when I try to start
the postmaster I get the following error:
FATAL: StreamServerPort: setsockopt (SO_REUSEADDR) failed: errno=71
/local/pgsql/bin/postmaster: cannot create UNIX stream port

Any ideas where to look for the problem. I had succesfully installed
Postgres v6.3.2 in a Solaris 2.6 system. But now I'm trying to
run this new version in the old 2.4 server without success.

Regards,

Carlos Villegas
Uniscope, Inc.