I have MS Office 2010 installed and we have intranet sites using SharePoint 2007 and 2010. When I open a document from my hard drive or create a new document in Word or Excel, I get a prompt to login to our SP 2007 site about every 10-15 minutes. This is not when creating or editing documents on the SP site, but just random documents I have created on my own PC. Whether I enter my info or click cancel doesn't seem to affect my ability to continue working on the document. Entering my login info and checking the box to save my login credentials does not seem to stop it from prompting me again later in the day.
At the suggestion of another site, I have gone into File => Options => Save and altered the "Offline editing options for document management server files" to point to an explicitly-local folder, but it had no apparent effect. Anyone know how to stop these prompts? They are very distracting...