Well, I finally decided to take the plunge and pick up a Space Grey rMB (512GB) from Best Buy after the lackluster keynote yesterday. To see that this process has gone smoothly since then would be a lie. Get the machine home, turn it on and I notice it's still running Yosemite. Go to sign into my Apple ID. "A server error occurred. Unable to log in. Please try again." (or something similar). Try again a few times before I finally say screw it, skip the Apple ID and get in. Go right to the Apple Store and install El Capitan. From there, I go into recovery, wipe it and start again, this time will El Cap. Go through the process again. This time my Apple ID works. Cool. Get logged in, ready to go when I realize Messages, Facetime and Handoff aren't working. Everything else is fine. Google around, try clearing NVRAM, restarting, another clean install, no change. Then I go to check to see if it's associated with my Apple ID online. Looks like Apple didn't register the purchase so I have to put in the purchase date. "We're unable to process your request at this time. Please try again." Finally, I say screw it and call Applecare. They think it's related to the purchase date so he transfers me to that team, they get the date in and that's all set. MacBook shows up properly online now. However, still no Messages, FaceTime or Handoff. Messages opens to a login screen where nothing occurs. Put in my info and it turns gray like it's trying to log in only to turn back black 2-3 seconds later with no explanation. If I skip it and try to log in in Messages > Preferences > Accounts, it shows my iCloud account as inactive. Trying to log in there gets it to log in for 10-15 seconds only to show "Error occurred during authorization" and it ends there. I've NEVER had this many problems with a new Mac. Any ideas?