For some reason, all of a sudden, I am no longer able to access my "About Me" page (/my/Person.aspx) on one of my SharePoint 2013 demo servers. I can access the "About Me" page for everyone else and everyone else can also access their "About Me" page, but no one can access mine. It seems to spin for a long time and then time out. The only thing in ULS is an aborted thread exception.
Finally, I tried accessing the edit page of my "About Me" using /my/_layouts/15/EditProfile.aspx, hit save without even changing anything and magically, I can see my "About Me" page again.