I am currently in an Operating Systems class and just read about Windows's service processes. The printer spooler was specifically mentioned. I have never seen such an incompetent piece of software in a professional setting in my life. The printer spooler almost never worked if anything went wrong during a print. Google "Windows XP printer spooler" for a thousand horror stories. Anyway, I wanted to open the discussion of major operating system flaws of the last ~20 years. IE 6 is a given.