Whenever I try installing the Nvidia driver through the driver
manager, it tells me Jockey has crashed on the back end. I've tried
several times and have rebooted. In the past, when using 8.10 I've
tried manually installing Nvidia's driver but it tells me I can't
because X Windows (in my case KDE) is running. When this system had
8.10 I was able to get it installed through the driver manager. How
can I shut down KDE so I can install the driver manually in Jaunty
since Jockey keeps crashing.