Hey I just updated my Mid 2010 Unibody Macbook from 10.9.3 to 10.9.4. It has a SSD and 8GB ram. It was very fast before the update, now after the update it is pretty much unusable. Every time I try to open up Mail, Safari, etc, It just spins the beach ball, and then I have to do a force shutdown. What's wrong with 10.9.4? I can't even open up a finder window! I had no problems at all with 10.9.3.