I have tried to download Windows Server 2003, and Visual Studio 2008 using the http/direct download option, and via the download manager countless times, both on my pc (XP SP2, with Firefox 2 and IE), my lappy (IE7) and on my pc with linux (firefox 2).
The same result every single time.
It just doesn't work. I have spent many hours on this and am ready to give up. I have tried resuming the download by using the links on the desktop that are created, by re-downloading the file with the download manager (hoping it would resume, it does not) and by using a third party download manager.
Again: it just doesn't work.