My iMac has been acting strangely for quite some time now and I'd really like to know how to fix the problem. When I first bought the machine whenever I were to put it to sleep with Leopard it would wake instantly with no hang-ups at all. The second I installed Snow Leopard, the machine has been taking 5-10 seconds before I can actually type in my password after waking up. I can hear the hard drive spinning up and down while the beach ball appears on screen rendering it virtually useless for 5-10 seconds before it allows me to type in the password and press enter. I've tried everything I could find while scouring Google. I clean installed Snow Leopard after wiping the drive, I reset the SMC and PRAM multiple times and I've repaired the disc using my Snow Leopard disc. Nothing worked. The hard drive is the default 1TB Seagate Barracuda that came with the machine. Any suggestions are appreciated. I'd rather not replace the hard drive as it will void the warranty.