I have a 15inch MacBook Pro and a 320gb Western Digital My Book external hd connected via usb cable. Every now and then, it ejects itself and my MBP can’t find it until I unplug the external hd’s power cable and plug it in again after a few seconds. It’s annoying as hell. I’ve read reviews on Amazon and many users seem to be complaining of this. Can someone who actually owns a 2tb external hd recommend one to me that they are not having problems with in a similar setup?