I am running Excel '97 and XP Pro (SP2), and have a spreadsheet that I
accidently edited with excel 2000. When I open it with Excel 97, it reads
properly, but when I save it, it takes forever, and before saving I get a
message it was created by a newer version of excel. Although I have saved it
as a new file name (in excel 97 format), opening the new file causes the same
warning and slow performance. I share files between work and home, and have
exactly the same version of Excel loaded at home and don't get that warning
there, and the performance is 10x faster. Any thoughts are appreciated.

Thanks,
Scott