IT Departments - How Are You Supporting Your OS Code?

ZMan asks: "A lot of IS groups are using Open Source tools (Linux, MySQL, PHP, etc...) to build cost effective and reliable IT infrastructures for their companies. Upper and executive management wants to know how these tools will be supported since their isn't one single commercial entity that does by default (ie. Microsoft). So, what does your IS group do? Do you hire staff with the expertise to do support in-house or out source all your support to a third party? Or something else?" You've got the source, why not find someone who can care for it, be it an employee, or contractor?