Do you think, since Radiator has XP,
that his pc is a bit older (4+ years), and
that maybe Mint 13 LTS might be a better choice?
I'm assuming 13 is a bit gentler on older boxes.
And Long Term Support (LTS) is an added bonus.
Maybe a smaller desktop like xfce?
Not so many bells & whistles, eye candy, ear candy,
but xfce is smaller and faster.
Wirth's law - Software is getting slower more rapidly than hardware becomes faster.