Here is my shortcut to ServiceDesk: http://servicedesk.****.*******:8080/HomePage.do.

It works fine on a Windows XP machine with IE8.  Now when I try it on a Windows 7 machine with IE8, it prompts me for my username/password, I enter it and hit OK, and then nothing happens.  The page does not load.  Why? 

Also, I have added the domain to my trusted sites, and have also tried Compatibility View, but it does not help.

Thanks for your help in advance.