Western Digital USB3 external hard drive (attached to new MBP Retina) seems to randomly "eject" itself when I'm trying to back it up via time machine. When this happens, I can't even shut my machine down properly. Ideas?

The backup process will run for sometimes 30 minutes or more. But, it's as if, at some point, the drive just can't be found. I get the message "this drive was ejected improperly". When this happens: my machine won't shut down, disk utility won't run. I have to press and hold the power button to force a shut down. Any ideas what's going on here? A MBP Retina issue? A USB3 issue? A western digital issue (although this drive has been functioning fine on old MBP)?
Thanks!

When you say that you've applied the latest 'patch,' I'm assuming that you mean the latest (July 18) software update for mid-2012 models? It was supposed to address some of the problems with the USB 3.0 ports. I don't think that, in most cases, it's a problem with the drives themselves (USB 2 or 3), rather it seems to be a port problem.
If it wasn't fixed for you using the July 18 Software Update the only thing I can recommend at this point is to see if Mountain Lion - soon to be released - will be able to fix the problems. If not, I would take your unit back to the Apple Store and let them know that you are continuing to have problems with the USB 3.0 ports. They may offer to switch out your logic board, etc.
Good luck,
Clinton

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