OK....This happens to me all the time and now I can stand it anymore. I will be working on the spreadsheet and using the mouse to scroll "UP" and "Down" the sheet.....All of a sudden the scroll direction will change on me and I will only be able to scroll "Left" and "Right"....What I am doing to change this? Also how do I change it back?....I have been fighting with this for the longest time but it is finally driving me nuts. I would appreciate any help.