As a desktop developer, I make serious use of my quad core processor. I often run two virtual machines on my box while developing and testing the client/server software I build. Having extra cores is not about performance with one application, but rather the whole picture of using your computer for multiple things at the same time. Even web developers have multiple applications and browsers open at the same time. Our build process is not just compiling the source code, but packaging it inside of an installer and running tests. Our typical build takes 45 minutes for a single processor. I'm working on making it multi-threaded to speed it up. Hogan