How can I solve this issue? It's been going on for quite some time (like, over a year now). When I type my own name in, multiple users come up - one with @admin (which I changed some time ago) and one with the correct username. People who tag me end up tagging me with the wrong username which no longer exists, and then I don't get emails notifying me of the comments. Many thanks - is there a table in the db somewhere that can be flushed or something? Thanks.