The myth that Microsoft was not using too much managed code for their
production products is revealed today on an interesting post by Darryl
Burling: the truth is that Microsoft is using lots of managed code on their
final products, and these are few data:
- Visual Studio 2005: 7.5 million lines
- SQL Server 2005: 3 million lines
- BizTalk Server: 2 million lines
- Visual Studio Team System: 1.7 million lines
- Windows Presentation Foundation: 900K lines
- Windows Sharepoint Services: 750K lines
- Expression Interactive Designer: 250K lines
- Sharepoint Portal Server: 200K lines
- Content Management Server: 100K lines
Interesting! 
Obviously, big products like these on the list cannot be totally written
on managed code (performances could be one of the main reasons) but this is a
data that can shut up many guys... 