I have a dual 2ghz G5 and today when i started it up, it took over 45 minutes to get my home screen. I reset it and it still takes 45 minutes to turn on. A few months ago i replaced both internal hdd's to 500gb and it has 2x1gb of ram. Its running Tiger and i would not like to update to leopard because i need os9 support. What could be causing the slow startup?