I have a Unibody MacBook Pro and a Bluetooth mouse for it. I have a desk with some shelves on it aswell. I place my macbook pro in the top shelf to i can hook it up to my external display while the macbook is in clamshell mode. But when i use my mouse, the mouse cursor is not smooth, like it is losing connection. I first tried it with a $20 mouse and not i have a $80 mouse. They still both do the same thing. How can i fix this? P.S. the macbook is 4 feet away form the mouse