A graphic illustration of why Windows is less secure than Linux. You know that old saying: "A picture is worth a thousand words"? Well here are two pictures! Both images are a complete map of the system calls that occur when a web server serves up a single page of html with a single picture.
This first image shows the system calls that occur on a Linux server running Apache.
And this second image shows the system calls that occur on a Windows server running IIS.
It's kind of self-explanatory, but there is a little more detail (including larger pictures) on the originating site.