Is this a laptop computer? The usual reason for this is unintentionally
brushing the touchpad. By default, touchpads are set up so that tapping it
simulated a mouse click. In the setup options, there should be controls for
either desensitising the touchpad or turning off the tape to click option.

--
Terry Farrell - Word MVP
http://word.mvps.org/

"rmoore" wrote in message
...
: When typing the cursor jumps from the end of a line to
: another location in previousley typed text. Very annoying
: when you have to redo it again.
:
: Any ideas
:
: Thanks