Though i have installed 9f23..the problem is most of these pkgs wont replace existing files. so I extracted required files. in my case all GE force files, NV* files and replaces them with what was there in the packages. Actually i removed those files and the then installed new files using kexthelper. restarted...cool it works...no issues as now.. Wake from sleep is an issue..completed disabled. Otherwise rocks..survived 40+ shutdown..start..60+ restarts no issues Hope you have EFI installed. if so then remove all the NV* files from single user mode and then restart. You will mostly have workable system with Non QE/CI..now open 9f23 in pacifist...look for Nvidia files and just extract those to desktop. Now remove all equivant files from your extensions and install these using kexhelper or similar installer or manually. Give it a try..it might help...as now i dont have natit/nvkush/nvinject..it works with out them...be cautious with wake from sleep. hope it helps..u can try same way for ATI as well