News.com: Microsoft has just paid for a study that says Linux servers for web portals are in some cases more expensive than Windows servers.
What price did they put on the security holes in Windows? At what cost do you hand over control of your machine to someone else? Linux certainly takes a great deal of skill to properly administer and secure from those wishing to do it ill. However the best of Linux administrators has a much better chance than the best of Windows administrators at keeping their boxes alive. Quite simply the Linux administrators don't have to depend upon Microsoft to patch bugs like those that caused the recent slammer worm.