Hello Everyone. If I am doing this wrong, please forgive me as I have never posted anything online before. I have been experimenting with turning my PC into a Mac. I have successfully got it up to 10.5.4 with everything working. The problem is that when I try to go to 10.5.5, it wants me reboot halfway through and will not work after that. I have tried probably every method posted in this forum but all have the same results. I have not tried it since completely removing the CPU Power Management from the system. Should I try something else or wait for a Kalyway release? System: Gigabit GA P965-DS3/S3 rev 3.3, Q6600 quadcore, Radeon HD3870, 4 gigabytes RAM.