I'm trying to process pictures in LightRoom, and I don't know if I've got a mouse issue, or a program issue
Have you changed the mouse batteries lately? I know I have the same keyboard/mouse combo as you. That mouse gets very weird when the battery power gets low. My keyboard still has the original batteries (from October 2007), but I've changed the mouse's twice already...

I'll change again and see what happens.
I can't use a corded mouse. 
