DNS problem
 

I've changed dns settings for several of my domains and for like two of them I see sites on new host for couple of hours and than see them on old host for couple of hours. What's wrong? It has been going for several days like this.

It can take up to 72 hours to propagate across all the DNS servers, clear your DNS cache on your computer and it should pull the correct site up.

Rob

what he ^^ said.