We've had two reports of users with yahoo email accounts who were unable to receive email (including password resets) from the forum. I'll look into the issue, but in the meantime the easy fix is to just use an alternate email address for the forum. If you're having this issue, please email me with your username, old yahoo email address, and a new alternate address. I can change the email administratively, and that seems to fix it. Then you can reset your password normally. Sorry for the trouble!