I just got a LaCie 320gb Porsche Design USB hard drive to use with airport extreme. I plugged it into my computer and nothing happened. I looked in the system profiler, and it recognizes that a hard drive is plugged in but the drive won't mount. The drive remains silent and it does not mount. I have several Lacie firewire drives and they always make a little noise when turned on. It seems like the hard drive is faulty on the new one. Any other ideas?