excell 2003 problem

i have a computer here that when excell is loaded and a file is open to edit.

when clicking on the information there the mouse will just keep draging around. and when you click the pages on the bottom it will not let you do anything. wants user to mover page, but will not do it.

....what?

Screen shot of the event might help in my understanding..

i had to reinstall office. and problem was fixed