I have a file that we use at work that has about 40 to 50 worksheets in it. There are two particular worksheets that do not have a lot of data on them that as soon as you click in a cell on the worksheet the entire file locks up. How do I go about determining the reason that these two tabs freeze the file? I would attach the file but there is sensitive financial information in it.

There is not one bit of VBA code in the file or any linking to other workbooks.