Q: This update has caused my Mid 2012 MacBook Pro Retina to loose connection with my Apple Bluetooth Keyboard and Magic Track Pad.

They both become unresponsive then loose connection.  Only a reboot will allow them to connect again.  I have tried telling Bluetooth to forget them and re-pairing.  I have not installed or ran any programs besides Outlook, Excel, Chrome, and Safari since the update. Activity Monitor Shows Kernal_Task as the Primary CPU and Memory hogs during this failure.  The MacBooks built in Trackpad and keyboard are not affected by this issue.

Mid 2012 MacBook Pro Retina

Yosemite 10.10.3