The last few days, my MacBook has not been seeing my 500GB Lacie drive which I use half as a Time Machine backup and half as a scratch disk for audio work. Nothing has changed, or even been unplugged/plugged in to my setup to make this occur, it has just happened for some reason. I usually have the hard drive hooked up through a USB hub and have tried plugging it directly into the MacBook but still no joy. Most of my other USB peripherals seem to work fine including mouse and keyboard. Of note, my MacBook wouldn't see my iPod Shuffle 512MB, though it would charge the device. Nothing appears in Disk Utility either. Any help would be greatly appreciated.