So, odd thing happened to me. I tried to turn bluetooth off, and it won't. In the menu bar it is grayed out (can't click it), and the same thing in system preferences, where there is a little box to check or unchecked. Both gray, can't use. There are no devices hooked up to it either. Any suggestions? It's making a noticeable difference on my battery life.
, along with verifying / repairing the disk and it's permissions.