What's wrong with windows?

Every now and then someone asks me what do you have against windows?' After going over the same arguments over and over again I decided to sum up my points in this web article. I've been in the IT industry for a good few years and have experience of versions of windows from 3.1 to 7. I also have experience of VMS, many kinds of UNIX, Linux, and the BSDs. It's my belief that windows has some fundamental problems that just don't exist in other operating systems. I've have tried to split my arguments into categories below.