Hello, I've bought myself a domain today with Dynadot. I filled in the name servers etc. However, when I visit my website with this domain (http://www.richmudkip.com) the old link immediately appears again. But there are some exceptions as well...some links remain richmudkip.com/blalbalba/ but richmudkip.com/blablabla turns into olddomain.com/balblabla
It looks like you are using another web host's name servers for your domain. You will need to check how you set up your web hosting because the redirection is being done from the web host's side, not from Dynadot.