Font shrinkage in a Shared workbook
 

We have about 10 people sharing a workbook which involves a column for notes
everyone can track / edit. Periodically, when you open the workbook, some of
the text within a subset of rows has shrunk to fit in the cell - at least
that is what it seems like. The font gets too small to read.

Some users sharing this workbook are running Excel 2003 & some run 2007.
How can I prevent this from happening?
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