I\'ve been trying to download the source code for .NET 4 (http://referencesource.microsoft.com/netframework.aspx) since yesterday but it just doesn\'t work.
Clicking
Microsoft has recently updated .NET Framework Sources website, see this blog post: A new look for .NET Reference Source.
All sources, including project files, can now be downloaded directly: http://referencesource-beta.microsoft.com/download.html No installers, no stupid javascript protection, just a direct link to a ZIP file.