Dishnews forum - How to avoid subdomain related issues?

[bcdxer]

i am running my dishnews forum in subdomain of medianetwork.co.in.
Google indexed both the below urls.
http://dishnews.medianetwork.co.in
http://medianetwork.co.in/dishnews

During the last pr update the second url http://medianetwork.co.in/dishnews
got pr1 and first url http://dishnews.medianetwork.co.in got pr "NA".

I have submitted the url 'http://dishnews.medianetwork.co.in' in many directories social bookmark sites and link exchanges.

Because of pr1, i want to promote the forum with url http://medianetwork.co.in/dishnews without nullfying the previous link building.

can anyone help me to resolve the problem?

[incrediblehelp]

Whats the problem? Toolbar means nothing to me