WordPress is very slow on Windows Server(Hosting Godaddy Shared hosting)

Hi ,

I have couple of subdomains which is on godaddy shared windows hosting. All the wordpress installations are very slow in response. I contacted the hosting provider but they refused that there is no issue from the server end. To verify the same i have installed an PHPBB app in one of the subdomains in the same server and noticed the difference. WordPress loading is very slow compared to any other sites.

WordPress Sites i have in subdomains are :
http://blog.askmein.com
http://code.askmein.com

The response time i have verified in the pingdom and gtmetrix which is very slow.

I have PHPBB application and Custom .NET application on other subdomain in the same server which response time is comparatively good.

http://trends.askmein.com
http://forum.askmein.com

I do not understand what exactly is the wrong in wordpress. How do i troubleshoot this issue