I have a problem, its effecting multiple machines, multiple magic mice. One is a 2012 macbook pro classic, the other is a 2006 Mac pro, both get random jerky mouse movements like the bluetooth signal is being lost. I checked the signal strength, i get ~60 on the MBP and ~70 on the mac pro. Its got to be some app i have installed but i don't know what. Has anyone had this issue and tracked it down to a specific cause or app that might be causing the problem?