And in case you didn’t knew, Apple has released a new iteration of its flagship Operating System, Mac OS X 10.8, aka Mountain Lion. Go read The Review to understand what it is all about.
Also, avoid updating until 10.8.3, somewhere around Christmas time. Let some one else do the beta-testing and bug fixing for you. (( Unless you really want to play as i do. But remember then that you will find some bumps on the road and your work can suffer from those. ))