So my mac was acting up, no sound from iChat and Spaces wouldn't function properly. So i restart, the Mac pro gets o the normal point of turning off the display before the spin up sound, but instead this ticking sound occurred. This had a repetition at about ever 3 seconds. So i quickly held the power button and shut down the Mac pro. I powered up the system and all seemed fine. Has anyone ever ran across this before? Looking at iStat, my hard drives are 40 celsius, one is 46. Thats 104 and 115 Fahrenheit. My fans are running normally.