I had the same problem with my WD MyBook EssentialEdition 320GB. I could solve it with the following command:
echo "128" > /sys/block/sda/device/max_sectors
where /dev/sda is the device in question. I haven't had a disconnect for a few weeks now. I'm (still) on Ubuntu Gutsy, 2.6.22-14-generic.
I had the same problem with my WD MyBook EssentialEdition 320GB. I could solve it with the following command:
echo "128" > /sys/block/ sda/device/ max_sectors
where /dev/sda is the device in question. I haven't had a disconnect for a few weeks now. I'm (still) on Ubuntu Gutsy, 2.6.22-14-generic.