Windows 7 Folder Option Reverts Back To Read Only

I am using win7 64 bit operating system. Also using microsoft office 2007 (home and school) and have recently run in to this issue. I can go through and edit an ms office file , I can edit it but when I try to save it I'm blocked because 'file is a read only' . If I rename the file I can save but then the renamed saved file becomes read only. Sure enough the word file 's properties show that it is read only. A check of folder options also shows that folders and therefore contents? are also read only.

Unchecking the read only box in properties does not work. You can uncheck the box and apply change but when you reopen folder its back to read only. Don't know if this is an office prob or a win 7 prob. Its really a problem when editing and saving a file with office. Also it is not consistent - sometimes it is all files in a folder that are office files sometimes only a few and , not often, and once the problem disappeared. Its strange.