Hi, I have purchased a 24" Imac with a 500gb hard drive. I upgraded to 4 megs of ram but for some reason it gives me the spinning wheel a lot and for a long time (over 60 seconds once). The machine is a 3.06 ghz Intel core Duo and is running 10.6.8. I have cleaned it with Disk Warrior twice but to no avail. Is there something I can do, my old Power mac was better this!!