DNS forced update

[hohios]

Is there any way to force nameserver to update itself to the latest DNS info from the second nameserver? (e.g with nslookup.exe of windows)

Let me explain...
When I add a 3rd level domain, h-sphere updates dns info to both resellers nameservers (ns & ns1).
But when I add second 3rd level domain (or a domain I guess) some minutes later, h-sphere updates only my secondary nameserver (ns1).
After propagation of DNS servers worldwide, ns (primary) never updates itself from second one... Maybe it's a bug.

So is there a way to force ns server to update to latest info?

Thanks in advance

[somereseller]

It would be very nice to be able to restart bind or something.

I always have to wait 24-48 to be able to access a domain name that I've just assigned a folder too. I don't understand why it takes that long since it's all a matter of internal wiring (no change of nameservers). Same goes when creating a subdir.