Hi,

It seems that Excel is not calculating the workbook/sheets properly !!!!!
If I hits F9 or Shift + F9 does not always calculate the cells !!! I tried to change the calculation modes (Automatic, manual) but nothing helps.

When the problem occur the only way to calculate a cell is to enter the cell, hit F2 and then hit Enter.

Somebody know what I change or if this is a bug on excel?

Thanks in advanced
Susan