UPGRADED to Mac OSX Mountain Lion today. So far things seems to be working well, however for some reason my FB photo in my contacts reverted back to a photo I had back in July and my frog is not showing. Come on what does Apple have against bull frogs???? Also Calendars are not syncing (worked fine in Snow Leopard) so more issues I need to resolve. But overall a much smoother transition than if I had gone from Windows XP to Windows 7. Does anyone know why Calendars will not sync? Its been saying moving calendars to server account for a year. I enabled iCloud on my Mac and iPhone.