This question here popped just recently under me and i do not remember asking it at all never even got notifications of answers WordPress Admin Bar Moving Links
This question was asked by an unregistered user, so it could be someone that shares a PC with you.
We do store the contents of the unregistered user fields (that is, name, email, and url) in a cookie so if you asked a question, didn't clear cookies, didn't log out -- someone else could ask and have those fields pre-filled as you based on the browser cookie.
That question is attributed to profile with unregistered status so someone must have used your details for authentication when creating that question. IPs check shows that access was made from one of two IPs that you use (less common).
Are you sharing your computer/browser with someone who might have asked that question?