Pam,

Which System and version of Excel are you using, and was the Workbook
created on a prior vesion of Excel?

Is the workbook very large? - do you get warnings about Circular References?
- do you have a lot of references to other books?

Is there any VBA code in this workbook? Do you have Adobe Acrobat loaded?

Any further clues?

Can you easily create a new workbook, and for each sheet, Copy and Paste
Formats, then Copy and Paste all data?

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"pam" wrote:

I do not know why this spreadsheet keeps locking up.