Anyone using the solaris 11 precompiled binaries on opensolaris snv_134

Hi,

I'm trying to run the precomplied binaries form postgresql.org for
solaris 11 intel. The Readme says it has been compiled on opensolaris
2010.11 which is (to the best of my knowledge snv_134). My machine is
also snv_134.

When I do ldd /usr/postgres/9.1-pgdg/bin/postgres it tells me that:

libsocket.so.1 (SUNW_1.7) =>     (version not found)

$ pvs /lib/libsocket.so.1
    libnsl.so.1 (SUNW_1.7, SUNWprivate_1.1);
    libc.so.1 (SUNW_1.23, SUNWprivate_1.1);
    libsocket.so.1;
    SUNW_1.6;
    SUNW_1.5;
    SUNW_1.4;
    SUNW_1.3;
    SUNW_1.2;
    SUNW_1.1;
    SUNW_0.7;
    SUNWprivate_1.3;
    SUNWprivate_1.2;
    SUNWprivate_1.1;

So my libc has only the interfaces up to SUNW_1.6. How can this happen
that two snv_134 machines have different libsockets?

Thanks for your insight

Thomas