I have just purchased a 2.5 ghz mac mini and find that it is constantly ether showing a spinning ball or lagging when opening say safari I am running 10.8.2 and have 4gb of ramwhich shows 1.10 gb wired 1.23 active 1.o18mb inactive 694 mb free I find that even with just say photoshop elements open it manages a spinning ball is this how it should be and has anybody else had these issues