Hi all, so I have a MacBook Pro Retina late 2013 model. I recently bought a USB mouse, if it matters at all it is a DeathAdder 2013 model, and each and every time my screen saver comes or my computer goes into standby the mouse no longer responds. This occurred both in Mavericks and is still occurring after my Yosemite upgrade. Anyone know what may be causing this and a possible fix. It's bloody annoying having to unplug the mouse and plug it back in each and every time just to get it working again.