What is DNS propagation?

Any time that DNS changes are made (on any level), you need to wait for propagation to complete. Propagation usually takes 1-5 days, but can take as long as 7-10 days. During propagation, traffic may come to either location. One person may see the new server while someone else sees the old one. Also, yourdomain.com may work while www.yourdomain.com does not. All of this is normal during propagation.

Please note this means that just because you go to the new site when you type in the domain name does not mean that propagation is complete. The best way to determine whether or not propagation is complete is to review the statistics for the old site and the new one.