I have a x1600 512mb apg and am running 10.5.1. I have installed the ATIinject and edited ATIRadeonX1000 so i have CI/QE. The problem is that i am getting a lot of mouse tear and cant change the res from 1024x768. On 10.4.8 it worked great.

if anyone has any good tips or workaround i would be happy to hear from you thanks