May 16, 2014 at 05:14PM The majority of people who upgraded to OS X 10.9.3 yesterday noticed what seemed to be a strange glitch, in the form of their /Users and /Users/Shared folders disappearing. In fact, the fault doesn’t have to do with 10.9.3 at all, but rather occurs if you’ve updated to iTunes 11. Article: http://ift.tt/1n27sJ7