I've rebuild all initramfs images with update-initramfs -u -k all (initramfs-tools version 0.85eubuntu1).
the HD heads are parked now with 2.6.19-7 kernel only when shutting down but not when rebooting.
Same thing with 2.6.20 but I cannot be 100% sure because my laptop is rebooting instead of shutting down (bug #71040). But just before the laptop should be shut down, I heard the HD heads be parked.
I've rebuild all initramfs images with update-initramfs -u -k all (initramfs-tools version 0.85eubuntu1).
the HD heads are parked now with 2.6.19-7 kernel only when shutting down but not when rebooting.
Same thing with 2.6.20 but I cannot be 100% sure because my laptop is rebooting instead of shutting down (bug #71040). But just before the laptop should be shut down, I heard the HD heads be parked.