I just wanted to share with you that my Lacie External 1TB harddrive had a blinking blue light when the USB cable was plugged in. I don't leave the HD on at all, just turn it on to backup, grab some data or listen to music. I was tripping cause I didn't want to loose my data. I checked the power plug, pushed the little blue button and unplugged and waited, then plugged the HD back in... nothing. So I attached the Firewire cable that came with it, and wala it worked again. So make sure and check your cables first.