As far as I could tell, my day-to-day work was unaffected by the iOS update. And then Friday night my wife asked me to play “Your Move” by Yes.
I opened Music on my iPad 2 and found it empty. I went to System Preferences and discovered that iTunes match was turned off. I flipped it on, including showing all music, and waited a few minutes.
Upon first returning to to Music I found the cloud waiting for me. Just an image of the cloud. Briefly the activity swirl in the up left of the screen activated and went silent.
Read the Entire Post at iPhone Life: http://www.iphonelife.com/blog/28823/my-8-hour-ordeal-ios-6