There were some issues with the dashboard system that should now be resolved. If they are not resolved can you please provide me with your GUID (to get your GUID go to http://profiles.yahoo.com/ , click on the "My Profile" tab and the GUID will be the long alpha-numeric string in the URL). There is an open bug some some developers losing account access so I'll add you to that bug if that is the case.
Jonathan LeBlanc Senior Software Engineer Yahoo! Developer Network Twitter: jcleblanc