You can get debs of 6.9.0.91-1ubuntu4 from http://archive.ubuntu.com/ubuntu/pool/main/x/xserver-xorg-video-ati/
However like Timo says, if you're running Jaunty you ought to be able to just do a regular update to get it. System -> Admin -> Update Manager; Check; Install Updates. Verify your version by running 'dpkg -l xserver-xorg-video-ati'.
You can get debs of 6.9.0.91-1ubuntu4 from http:// archive. ubuntu. com/ubuntu/ pool/main/ x/xserver- xorg-video- ati/
However like Timo says, if you're running Jaunty you ought to be able to just do a regular update to get it. System -> Admin -> Update Manager; Check; Install Updates. Verify your version by running 'dpkg -l xserver- xorg-video- ati'.