How long should the update take? mine took about 8 hours and didn't install properly. Now I'm having to start over. Is this happening to anyone else?
Bypass the abysmal MAS, manually DL it from http://support.apple.com/kb/DL1583, and reinstall.
Same for me. 8 hours and no succes. Downloading manually. I think is the apple servers. My opinion. No an expert. Good Luck.
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