.info, .biz, .name, .org not working

[frontsys]

Is there a definitive answer to this problem?

I see other posters have had the same problem, but there doesn't seem to be a proper answer yet?

I am using the latest version of the script, here

http://www.fdshosting.co.uk/design/domain/index.php

But when I search for the above-listed suffixes on a domain name I know they are available for, I do not get the "available" return as expected.

Is it database related or script related?