Ultra fast domain resolve or what?

Hello
I am using your service for 2 days now and decided to buy a domain name and point it to the nameservers mentioned in site info col. in control panel
Although it usually takes 24 - 48 hours to resolve, I am noticing that within minutes of registreing the domain name, I am getting the 404 page hosted on unlimitedmb.com.
Is this normal or expected ?

And by the way
The service is truly great except
1. Upload speed is VERY slow.
2. Site loads a bit slow..just a bit.
3. The ftp username should be mentioned in welcome e mail...not in control panel, site info which is very cumbersome.