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Some linux distros may be easier out of the box, but Freebsd (despite misgivings here about some of its recent directions) seems to avoid in a known-fix sort of way breakages upon upgrades and compilations, and may be easier once one is practiced at it (I daily browse new threads on an advanced Linux forum also...). If one was to continue using an operating system, for say, five years hence, I see no other alternative unless it a system one wants to remain continually in a steady state (just browsing and email and music, for example.)
 not so trivial, IMHO.
I like FreeBSD too. I just got tired of having to compile stuff since pkgs lagged behind ports, and Flash didn't work without the Linux layer.
I'd definitely pick it as a server, when I can build the correct infrastructure for it. It's nice, clean, and it does exactly what I tell it to do.