It looks like most of the UX nightmares from OSX Snow Leopard have been addressed with OSX Mountain Lion. Hurrah!

If the $19.99 price tag isn’t enough of a reason to just dive in, these three items alone are well worth avoiding the needless aggravation of sticking with Snow Leopard.

1. Finder dragging.

2. Calendars.

3. Address book groups vs contacts.

Have you spotted any other hurrah moments or hiccups in OSX Mountain Lion?