I use a Bluetooth mouse on my work MBP. This worked perfectly on 10.8 (Mountain Lion). However, Apple, in their infinite wisdom, did something to the BT stack for Mavericks. Now it has trouble re-connecting to the mouse upon wakeup unless the mouse is already on, as well as other re-connection bugs. I found evidence that Apple are *actively ignoring* the problem. They just don't fucking care. And no-one can even figure out why.
Wade.
Wade.