I have a Word 2007 document (named Work.docx) that I open, edit, and save to daily. Though it is NOT read-only, it's probably worth noting that I have a password on this file, so someone who does not know the password won't be able to open the document. The document is saved on a location on my hard drive (in a sub-folder of the My Documents folder). It is NOT located on a network drive.
Every once in a while (maybe every couple weeks)--I can't find any rhyme or reason as to why it happens--when I go to save the file using the save icon in the title bar, Word gives me a message saying "The file is read only." I then have to save the file using another file name (Work2.docx, for example). If I then open the newly created file (Work2.docx) and attempt to save it using the original file name (Work.docx), it will save it without a problem. There will be no warning that the file is read-only. I will then have no problem for a couple weeks until this same issue ocurrs.
I did some searching on Yahoo but can't seem to find my specific problem addressed. If anyone has any suggestions, it would be most appreciated.