Slashdot has a link to a Microsoft whitepaper that lists the problems with Windows and the good aspects of Unix.

http://www.securityoffice.net/mssecrets/hotmail.html

"Reboot as an expectation. Windows operations still involves too many reboots. Sometimes they are unnecessary, but operators reboot a system rather than take the time to debug it. For example, a service may be hung, and rather than take the time to find and fix the problem, it is often more convenient to reboot. By contrast, UNIX administrators are conditioned to quickly identify the failing service and simply restart it; they are helped in this by the greater transparency of UNIX and the small number of interdependencies. Some reboots are demanded by an application installation, and are not strictly necessary."