When I type in a cell [say cell F1] "=sum(A2:A8)" I get a "0" as the result.
Yes, there are numbers in A2 through A8 which add to 12. Anyone know why the
formula doesn't work? This happens on some sheets in my workbook, but not all
sheets.

Also, another wierd thing: on some cells doing the above reults in the
formula showing as text in the cell. Try THAT one!