My gravatar has suddenly changed. I know this question has been asked before. However the only answer I found is that it could be due to a change in e-mail address or if I accessed my account from a different unusual location.
However, I did not do any of these, so I was wondering what might have caused this sudden change.
Added by Arthur Fischer. I have looked at the email addresses associated with the user's "my logins" here (all the same), taken the MD5 hash, and then passed it on to Gravatar to see what results, which was this:
(Gravatar URL). This matches the original Identicon (and that given on the user's other SE accounts). I have no idea how the current Identicon is being generated.