I've had 10.5.1 up and running on a P5K-VM for a bit of time now, the machine is rock solid stable under os x and windows, both I have set up to use AHCI mode for this G33/ICH9 board.
What I've noticed in the past couple of days though is that under OS X (and ONLY OS X, can't get this to happen in windows whether the disk is being thrashed or not), I get this louder-than-normal intermittent clicking noise. Each one of these is associated with the activity light flaring up for a fraction of a second. Seagates SeaTools indicate nothing wrong with the drive under Windows. I can't get smartmontools to talk to the drive in AHCI mode under OS X either, so I can't tell if any of those parameters are changing alot around these events.
The clicks are not repeated, they're just intermittent, seconds go by between each one, and sometimes hours.
Anyone else experiencing something similar under AHCI mode? Also, is there a way to get the generic AHCI drivers to do some acoustic management of the drive. It's freaking loud when it's reading/writing, much quieter under Windows for the most part.
