Hello. I was not able to open my SR MBP 17" (summer 2007 model) this morning. I pushed the button many times but I could not open the lid. After checking on the internet, I managed to open it using a business card. Now, I notice that the button which opens the MBP cannot be pushed as much as before. What are the causes? Is there a good way to fix the problem by myself? I am quite sure that if I close the lid, I will have the same problem again. Thanks.