I have Macbook Pro since 2012. It has never given me any trouble since then. Its 2.5GHz i5 with 8 GB Ram running OSX 10.9.3 But since yesterday afternoon it has started behaving very annoyingly. Now every little thing I try to do gives me that spinning beach ball. I mean every little thing. Lets say for example I try to know About this Mac, after clicking that apple icon, I have to wait a minute for ball to spin and then let me get to menu and after clicking on about this mac another minute to wait. Even as I type this, after every few words I type, ball spins and won't let me type so I have to wait and type more and again wait. When I check RAM usage shows almost more than 50% to be free. Checked activity monitor and could not find anything out of ordinary there either. So what could be troubling my laptop? I want to find out the problem and solve it, if someone can help me ?