Ever since I turned on/subscribed to iTunes Match 4 days ago my Western Digital MyBook external that I use as my iTunes drive had unexpectedly disconnected from my iMac Mini. I notice this when I wake my Mac and I get the warning that one of my drives was not put away properly. I have had other drives misbehave like this in the past, but not this one or this model. Anyone else have this issue? It may not be specifically with the Match service, but the latest version of iTunes not communicating well with the drive? I upgraded iTunes the same day I subscribed to Match. Because of the disconnect, it took me two nights to fully migrate and match my library. The first disconnect may have been when my system is set to sleep, so for the second night, I did not allow my computer to sleep. It completed my entire library, but the next day when I went back in, my external had disconnected once again. Am I the only one having this issue? Any thoughts?