I don't know how they wrote this with a straight face. This was a real
memo sent out by IBM to its employees in all
seriousness. It went to all field engineers about a computer peripheral
problem. The author of this memo was quite genuine.
The engineers rolled on the floor!

Especially note the last couple of sentences.

If a mouse fails to operate or should it perform erratically, it may
need a ball replacement. Mouse balls are now
available as FRU (Field Replacement Units). Because of the delicate
nature of this procedure, a replacement of
mouse balls should only be attempted by properly trained personnel.
Before proceeding, determine the
type of mouse balls by examining the underside of the m ouse.
Domestic balls wi ll be larger and harder than foreign balls.
Ball removal procedures differ depending upon the manufacturer of the
mouse. Foreign balls can
be replaced using the pop off method. Domestic balls are replaced by
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 person have
a pair of spare balls for maintaining optimum customer satisfaction.
Any customer missing his balls should contact the local personnel in
charge of removing and replacing these necessary items.

Please keep in mind that a customer without properly working balls is an
unhappy customer.

Thank you for sharing this.Always good to end the day with a good laugh.

Oh my!!!!

My mouse must be a girl...I can't find any balls...

I still think he may have written it with a twinkle
in his eye.