I have a 5,700 kb excel workbook. When I try to saved it, excel some times
creates a huge temporary file in the same directory were the workbook is. I
have seen this temporary file grow up to 2 gbytes! Then Excel can not save
the file and shows a messages saying “Document not Saved”.

When this happens, I get out of excel without saving the file, at the cost
of work being lost, I rebuild the workbook by using Excel Workbook Rebuilder
program (from VBUsers.com) and the file is fine. I can save the file again.
At least for a while, until it this problem happens again some days latter. I
need to stop this from happening. What should I do