No we are not sharing workbooks. I was in our Ontario location and was talking to a coworker when poof his crashed and he described it as a frequent problem for him when other co-workers were chiming in describing the same situation(s). like frequent crashing is one, another problem is when your working with multiple SS open the cursor jumps to other work books and you have to find the appropriate SS and then fill in a cell and enter otherwise excel is locked up. I've used office xp, 2003, 2010, and have never had any issues. It is very frusterating as I use excel all day.