why my website shows moniker's parked page?

I bought a domain and changed the DNS and everything to my hosting and created a nice website with around 5 pages.

Most of the Times when i type my domainname in the browser it shows the Homepage correctly.

But frequently sometimes it shows the Moniker's Parked page...What am i doing wrong here?

If anyone can give a solution to this problem....i will be forever grateful.

PS:i have my own reseller account and i have experience hosting a dozen of other websites without any problem.So i am not a newbie.

it takes some time for the DNS to propagate, ask a friend that uses another ISP or people from other countries to see if the website is up for them

clear cookies and cache just in case and try again, but I'm pretty sure that it's just a matter of some time

Thanks for the answer...

But i changed DNS 3 months back....
And most of the Time it goes to my homepage...Randomly it's going to the Moniker's parked page...
Can anyone help?

Any help will be repped and Thanked.