Ubuntu hd4850, and a minor triumph of usability

My desktop machine's video card (a GeForce) died recently, producing rather pretty but also quite disturbing patterns on the screen. I replaced it with a Radeon hd4850, which seems to work well under Ubuntu Hardy. This machine also boots Windows, and I'm amused to see the NVidia uninstaller refuses to run unless you have an NVidia card in the machine. Nice.