Okay, I know this is going to sound crazy. But within the last three days, my system has been getting smoother and smoother. I'm specifically talking about the GUI. And no, I am not imagining things. It has without a doubt become markedly smoother. I don't know what it is, or what happened. Is it possible that a brand-new rMacBook Pro, with these SSD drives takes an adjustment period?. To fully cash out and get up to speed, so to speak? The performance I am now seeing on the GUI is equivalent to what I had on a classic MacBook Pro from last year, and this is all on the Intel 4000 chip. Very confused but very happy.