I use a Logitech M555b Bleutooth mouse with Windows 7 on a Dell Precision M4600 laptop.
Problem was that the scroll wheel stopped working in most applications. This seemed to happen after waking up from hibernation or screen saver (after reboot it worked).
The solution was simple: I uninstalled the Logitech Setpoint software and after that the mouse wheel immediately worked again!
Was once an enthusiastic PepperByte employee but is now working elsewhere. His blogs are still valuable to us and we hope to you too.