Vista freezes when secondry hard drive powers on

[nadav]

I have vista ultimate x64 installed with a secondary hard drive attached, both HDs are Seagate ST3250410AS connected to an AHCI controller (GA-P35-DS4 motherboard) with Intel AHCI driver (8.2.0.1001) installed. The power scheme options are set to turn off hard drive after 20 minutes. Every time the secondary hard drive powers on (when accessed, or something) the system freezes until it's finished the process.

Is there a way other than disabling HD power scheme to stop this behavior?