RE: Should have been "11"
Why do you not bring up NetWare? NetWare, along with Unix, just runs, and rund, and runs. I rarely see my NetWare cleints because there is a problem with the server. If there is, then it is because a piece of hardware failed rather than a problem with the OS.
An added benefit is that the wannabe's in the office will not mess with NetWare, like they might with a Windoes based server, simply because it is so alien to them.