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Install Ubuntu Server 14.04.1 and you have a fairly minimal server OS. Do 'sudo apt-get install kubuntu-desktop' and suddenly it's a desktop OS. Going back isn't quite so simple, but you can 'sudo apt-get remove kubuntu-desktop' to get most of the way there.
The search function is worthless, which pretty much makes the whole site worthless. Their data may be good, but if I can't find my site by hostname OR ip without paging through 243 pages of 10 sites at a time... Nope.