None of them have green hair and orange faces but all of 'em are short.... of the mark.
Most Linux is fast on old hardware until you try to do something like browser video then your old laptop is just that, again.
I have an old HP Laptop with Ubuntu. Apart from randomly powering off on startup several times (with no syslog message or error) it can't play DVDs a good as the original Windows 98 and free DVD player that came with it. It's a fun OS for tinkering and the looks (skins) you can achieve are great.
But where is Google OS ?
