I have successfully installed Webmin in our Redhat Linux 7.1 version using rpm bundle (webmin 0.92) provided in the webmin site.  I am quite happy with all its features.  But i encountered on major problem - I was able to create a new master zone under Bind 8 DNS Server.  When i go inside and try to add new Accounts or Name Server or Mail Server, it doesn't add's up and doesn't even produce errors whereas I am able to do that for existing master zone under Bind 8 DNS Server. 
  Any explanation for this would be greatly appreciated.
  You can contact me at : karthikeyan@aspiresys.com