In reply to:
I can't seem to find that login username/password anywhere in the contol panel. Where is it (again, it is not identical to any of the users), and how do I change it?
Click the small Edit Profile link at the top of the panel. The panel password can be changed under the Security tab. As far as I know, the email address under Contact Info -> Emails go to: is the one used for panel log-ins.
In reply to:
I imagine that I must have registered some of them under one user, and some under another, and so permissions defaulted to only allow read access to the generating user. Does this sound right?
Yeah, I'd say that sounds right. Some of your domains were created with one user set as the FTP user / CGI-runs-as user: and others were created under the other user. When you log-in using FTP, you will only see the directories relating to the domains controlled by the user you logged in with.
Mark
--
Save $50 on DreamHost hosting using promo code SAVEMONEY ( Click for promo code details )