hard drive problem

Hello,

I have been trying to fix my DSDT and I have fixed all the problems except this one, and it's not giving me an error so I was hoping someone that know's a little more about this sort of stuff could take a look at it and see if they can spot the problem.

About every 5 seconds or so, but not at a constant interval (sometimes every 2 seconds, sometimes up to 30 seconds) the power management is trying to park the head on my hard drive. The drive makes the same spin up then click that happens right before the system powers off, so I'm guessing it's trying to park the head. This happens over and over again and I'm not sure where to begin.

I have tried turning on all the debug messages for ACPI, as well as for the acpi deamon, but it's not saying anything about this. Does anybody have any ideas?

Thanks,
-Elliott