This issues has been debated on just about every technical message board on the internet. Some may even say that it is nothing more than flame bait.....

However, as OSes offer more features and enhancements, securing the said OS becomes more complex. So, the question and/or statement regarding which OS is more secure or which has more security holes is not really the appropriate question to ask. What should be looked at is the technical competence of the people responsible for administering the resource. I have to say that in my experience, 7 out of 10 vulnerabilities are caused by dumdums behind the wheel and not the OS itself. Again, this debate will go on forever and the "official" vulnerability count will hop from OS to OS as time goes on.

--TH13