There is no warning sign in profile edit page like join page..
When there is missing in the join page, you see this....
But in edit page, you don't.. they may think it's not working but it's not.
For example. if poeple use Facebook connect, it will go directly to profile edit page, then they click "save". there is no warning so they may click many many times thinking it's not working. Please include the warning dot.
Thanks
Patrick