An anonymous reader writes "Recently my boss has asked me about the advantages of Linux as a desktop operating system and if it would be a good idea to install it instead of upgrading to Windows 7 or 8. About ten boxes here are still running Windows XP and would be too old to upgrade to any newer version of Windows. He knows that i am using Linux at work on quite outdated hardware (would have gotten a new PC but never requested new hardware — Linux Mint x64 runs quite well on it) and i always managed to get my stuff done with it. I explained to him that there are no licensing issues with Linux, there is no anti-virus software to deal with and that Linux is generally a bit more efficient on old hardware than operating systems from Microsoft. The boss seems interested." But that's not quite the end; read on for this reader's question.