Maybe this is a problem I only have, but I want to share what I have done trying to solve it. I have a Microsoft Sculpt comfort mouse. The problem is that all the time I use the mouse, it hangs for a few seconds and after that working fine. That is a continue process. Very annoying. What I did was rolling back the driver in the properties settings. The result of that is that the Marvell Bluetooth drivers are being uninstalled and the original Microsoft driver (from 2006!) is being used from that moment. And, that did the trick for me. Till now no disconnects anymore. I hope it can help other SP users.