when I have worked on an excel s/sheet originally created in 2003 then added
new data and saved it as 2007, the next time I try to open the file all of
the data has disappeared which is stored on a network drive. If I try to find
the file size, i can find the file with correct name but the file size has
become 0 Kb. Now I am facing same problem with a new file purely created in
Excel 2007 similarly losing everything.