I know that a few people had the pleasure of throwing a few pies at Microsoft when this was discovered, but a fix is now available. Description of the Excel 2007 hotfix package: October 9, 2007 This hotfix package fixes the following issue that was not previously documented in a Microsoft Knowledge Base article: When you perform a calculation in Excel 2007, the following behavior occurs: The result of the calculation is a number from 65534.99999999995 to 65535. The calculation is performed correctly. However, the result is incorrectly shown as 100000. The result of the calculation is a number from 65535.99999999995 to 65536. The calculation is performed correctly. However, the result is incorrectly shown as 100001. To resolve this problem, apply this hotfix. After you apply the hotfix, recalculate the spreadsheets that are in manual calculation mode. When you do this, the values in the spreadsheet will be updated to the correct values. Excel 2007 Download the Excel 2007 hotfix package now. ( http://download.microsoft...