Hi I have my Apple mouse cursor shaking on the screen. I was reading and it seems the bluetooth signal from my 2008 Mac Pro. Some how is weak not, if I go very close to the Mac Pro the cursor moves just fine. If I re start the Mac Pro the cursor moves fine, but after a few minutes starts trembling. Normally the mouse is just 4 feet from the Mac Pro when this is happening. My question is: does anybody knows about if I have to reset or upgrade anything in my Mac Pro in order to make it run fine? I have OS 10.9.1 BluTooth Firmware 1965 I am looking into the manufacturer but I do not see software update.