IBM Strikes Again The following is reported to be directly out of an IBM Service Database Manual... no joke. So that there is no confusion, it is referring to the little rubber-coated ball that is found in the "mouse" input device. For some reason, my mind (sorry thing that it is) just will not allow me to understand this in that context... see for yourself. TEXT: Mouse balls are now available as a FRU (Field Replaceable Unit). If a mouse fails to operate, or should perform erratically, it may be in need of ball replacement. Because of the delicate nature of this procedure, replacement of mouse balls should be attempted by trained personnel only. Before ordering, determine type of mouse balls required by examining the underside of each mouse. Domestic balls will be larger and harder than foreign balls. Ball removal procedures differ, depending upon manufacturer of the mouse. Foreign balls can be replaced using the pop-off method, and domestic balls replaced using the twist-off method. Mouse balls are not usually static sensitive, however, excessive handling can result in sudden discharge. Upon completion of ball replacement, the mouse may be used immediately. It is recommended that each servicer have a pair of balls for maintaining optimum customer satisfaction, and that a customer missing his balls should suspect local personnel of removing these necessary functional items.