When typing I frequently find that because I may have brushed the mouse pad(?), or for some other reason, that the letters i am typing suddenly do not go where they are meant to go but continue from wherever the cursor was last positioned - some way back in the text. This is particularly annoying as I then have to cut and paste them back where they should be. Is there a way to overcome this problem? My machine is a Dell Inspiron 6400 laptop.