I'm pretty sure this has something to do with Proxy server settings. If you're on a Network that uses a proxy, it'll cache Prohosting's "Click here to download" page, and keep loading it. Some ISPs also use Proxies (Check Control Panel--> Internet Options--> Connections. Click on the name of your connection in the Dialup Settings box and click settings. If the "Use Proxy Server" box is checked on this page, your ISP uses a proxy(or if you use DSL or Cable, I believe it's in the LAN Settings at the bottom of the Connections page.)
You can have it bypass the proxy server for certain Site prefixes under the Advanced option. Just type http:// in the "Bypass the Proxy for sites that begin with" box. I'm pretty sure that'll cause it to by pass the proxy for any site on the web. (Although you'll probably notice that sites you often go to will load slower without the Proxy's cache . . . you'll probably want to get rid of that setting once you download the DLS.)