I use by "12 PowerBook at the office. It sits on a glasstop desk and it hooked up to a windows network via ethernet. I get shocked when I touch the aluminum case between 3 and 5 times a day! After the shock the mouse freaks out. It is as though it it attached to a rubber band when I try to move it it snaps back. I have to restart the computer to solve the problem. It has been suggested to me to spray the case with antistatic spray or have it touched grounded metal. These seem like very inelegant solutions. Do I have a lemon? Anyone have any other ideas?