The two most common causes a a) accidentally brushing across the touch
pad while typing, and b) electrical interference or low batteries with a
cordless mouse.




"david" wrote in message
...
During typing reply of an e-mail suddenly curser jump up 2 or 3 row above
and
waste of my time ,because after typing of some words i notice about it.
how i can prevent such occurrance?

Thanks for your help

David