Postgres 9.1.6 Startup Warning

Dear Team,

I have downloaded postgres 9.1.6 32bit from Enterprise DB site (One Click
Installer) and installed the same in Suse Linux 11 SP1 server edition.
Installation was successful. But while starting up postgres, I am getting
the below warnings.

postgres(at)saipranav:~/bin> ./pg_ctl -o -i -D /opt/PostgreSQL/9.1/data start
/opt/PostgreSQL/9.1/bin/postgres: /lib/libz.so.1: no version information
available (required by /opt/PostgreSQL/9.1/bin/../lib/libxml2.so.2)
/opt/PostgreSQL/9.1/bin/postgres: /lib/libz.so.1: no version information
available (required by /opt/PostgreSQL/9.1/bin/../lib/libxml2.so.2)
server starting
postgres(at)saipranav:~/bin> /opt/PostgreSQL/9.1/bin/postgres: /lib/libz.so.1:
no version information available (required by
/opt/PostgreSQL/9.1/bin/../lib/libxml2.so.2)
/opt/PostgreSQL/9.1/bin/postgres: /lib/libz.so.1: no version information
available (required by /opt/PostgreSQL/9.1/bin/../lib/libxml2.so.2)

postgres(at)saipranav:~/bin>

What should be done from linux part.
Kindly clarify me in this regard.

--
Regards,
Hari