I have been experiencing issues for the past two days when trying to upload music albums from my iTunes library into the iCloud. The issue occurs @ Stage 1 when trying to "Send Information to Apple." It will hangup and eventually give an error of not being able to connect due to loss of connection (no duh!). I figured it may just be me but apparently there are several people around the world that are experiencing it. You think we would have heard more about it 
https://discussions.apple.com/thread/5223301?start=45&tstart=0
https://discussions.apple.com/thread/5223301?start=45&tstart=0