We have several spreadsheets that we share with 5 users. Some of these worksheets seem to grow to a large size in a short amount of time, even though they actually don't contain that much information. These are files that several people are updating and viewing many times per day. For example, I had a file which said it was about 96,000 kb and when I copied the date and pasted it into a new spreadsheet, the file was only about 250 kb in size. When these files get so large, it makes it difficult and slow to open, edit and save.

Software/Hardware used:
Excel 2003, Office 2003