Whenever I install 12.10, I'm prompted to install 280 updates. Whenever I install them and reboot, I get this glitched-up purple/orange screen which obviously prevents me from logging in and using the OS. I'm certain that this is a video driver/card issue, but how do I fix it? I have an ATI Radeon HD 6850 (1GB) graphics card. Everything seems to work fine when I don't do any updates, but I really don't want to use "vanilla", unupdated 12.10.