Everything Apple (the Mac heads thread)

Mavericks OS, what are the issues, should I upgrade?
Can't be faffed with the non compatible issues at work.
I appreciate I might be a little late to the game but I live in Australia see.

Works fine on my mac mini 4gb ram 2.6ghz and was a bit slow on old macbook 2.13ghz until I put in some more ram. The only thing that didn't work after the upgrade was some safari extension I didn't use anymore anyway. Do it!