Unpleasant task in sight.

I'm afraid our grumpy editor will get veeery grumpy when he tries various graphics cards under
various graphic loads. In my experience, the r300 driver is the Free 3d driver that drives the
fastest cards (ATI x850), and:
- it's not the fastest driver around (fglrx and catalyst are way better on same hardware)
- it has a tendency to lock the machine solid under 3d load
- generally the 3d framework under linux isn't mature enough (try blender under compiz)

But it's the best thing we have right now.