Hey, someone just made a lost password request for this account, but it wasn't me. Whoever made the request does not own this account.

Maybe you own one with a really similar name?

If you use Gmail, do a search on "Welcome to Dreamwidth" (in quotations like that) to possibly find the notification for when you created the account you own. That should have the correct username on it, and you should then be able to get into that account.