What conditions may cause "The content on this page has either been modified by another user..."? I'm working on a website which has multiple admins, some creating contents, some editing and some tagging...

I know editing one node at the same time will cause this error, is there anything else cause this error?


  The content on this page has either been modified by another user, or you have already submitted modifications using this form. As a result, your changes cannot be saved.
Another cause might me the fact that you save a form, then hit the back button and try to save it again