Can't download .NET framework 2.0 runtime

I tried to download and install RescueTime and it said I had to have .NET Framework 2.0. I clicked OK to download .NET Framework 2.0 and got an error that it could not find the server at Microsoft. I have gone directly to the MS download site with the same results on several days at differing times. What's going on? Does my system have a bug/virus which is preventing this download? I am running Windows XP Professional.