I used one a decade ago, said eff it, then went to wired optical. Used it until I moved offices, didn't have room for wires, then got a new wireless this past weekend. Today, I am ready to throw it through the fvcking wall. I fvcking hate these damn things. I paid for a top end wireless combo mouse keyboard from Logitech. The mouse started great on the first day, but turned to sh1t today. I changed the batteries, everything. Seriously Fvck this thing.