Xubuntu is the best version - or at least it was last time I used it. Will happily live with 256mB of RAM - or at least it did a year ago - and the interface is much easier on the graphics card than Ubuntu's Unity. Xfce is also a really nice, functional environment to be in. I used it for about 5 years or so happily on hardware ranging from bottom-end to high-end then depreciating down to bottom-end again over 4 years.
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--m(^0^)m-- Wot, no sig?
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--m(^0^)m-- Wot, no sig?