How can I prevent the privacy warning in Excel?

I have Excel 2007. When I want to save a spreadsheet, I often see this message:

I've seen this with macro spreadsheets (using the .xlsm extension) and with non-macro sheets (using the .xlsx extension).

How can I prevent this warning every time I save my spreadsheet?

Answer

Disable document inspector in the Trust Center.

Note: picture may not be exact as I use Office 2010.

Step by step instructions (for 2007):

1. Office orb


2. Excel options


3. Trust Center


4. Trust Center Settings...


5. Uncheck Remove personal information from file properties on save


6. OK


7. OK