Torben wrote about a problem he was having with PivotTables in Excel. It seems that whenever he adds calculated items to the PivotTable, Excel takes a performance hit. If his dataset contains even a few thousand records, Excel even hangs.
PivotTables put a huge strain on Excel, as it slices, dices, and analyzes the data to create the table. The amount of strain experienced depends on many different factors, such as size of the dataset, the data in the PivotTable, etc. These factors can seemingly conspire against you, leaving you with a system that is sluggish at best.
There are ways, however, to change how Excel works with data to create the PivotTable. If you modify the settings that control this process, you may notice an improvement in Excel’s responsiveness. There is no guarantee that these changes will cure all PivotTable problems, but they offer a good place to start. The changes you can make are covered in a Knowledge Base article, located here:
Read through the article and try some of the suggestions-you never know; it could make your PivotTables easier and faster to work with. (Even though the article specifically says it is applicable to Excel 2000, the concepts it suggests can be easily used with later versions of Excel.)