Saving spreadsheet gives read only error message

[Scott]

I created an Excel spreadsheet and saved it to a network drive. When other
people edit the spreadsheet and try to save it they get a message saying the
file is set as read only. They are directed to save the file as another name.
The save dialog box comes up and saves the file as a "copy of" the original.
If you right click on the file and go to properties the read only attribute
is not selected. Why does this keep happening?

[irishboyx]

that behaviour would occur if someone else had the workbook open at the time the user opened the file (and it is not a shared workbook)