In Webmin, check your module config for bind. You need to make your path to the executables and config files for the new version are correct. It is possible that you installed the new version of bind into a different directory webmin is still reading the config from the older release.
Thanks Stokes, i already change the path for the named.conf, after i save the changes webmin asks what do i want to do and i select
Setup as an internet name server, and download root server information
and I get this:
Download failed : Failed to lookup IP address for rs.internic.net