Why since installing Maverick my Magic Mouse drops connections on boot up or intermittently?

Periodically my bluetooth Mighty Mouse (model A1197) stops working. Sometimes I can go days without a problem. My mouse is located within inches of the computer. Lately, during bootup the mighty mouse will not engage and I have to reboot a second time to get the mouse to respond. I tried all recommended solutions, but none have worked. The only solution that has worked is to reboot the PC. I also tried fresh batteries. I am using a Macbook Pro 2012 version. This problem never occurred on the previous OS. Any suggestions as to what might interferes with the bluetooth signal? Is this mouse too old and I should upgrade?