About 18hrs ago I changed my Zone information at my domain registra's site to use the new DNS servers and the new Ip address.
The site is not visible yet which is not unusual I don't think. My concern is that when I do a whois lookup I get 4 DNS records. My 2 old DNS servers and below the two new DNS servers. Is this normal and will the old DNS records disappear or should I have done something?
Personally, I would just call up the registrar for both domains and be sure they have done everything they are supposed to do. Let them work it out. But yes, if you're seeing a whois lookup that is pointed to both the old location and the new, something must be wrong. Normally when you change to the new, the new records replace the old ones.