I recently stumbled across the same problem (it seems).
I can transfer files to my AOL ftp site using the inet control but only if i'm signed on with the same screen name. If I sign on using another screen name the transfer fails without envoking the error event (state 11). I'm still working on the problem, but it has something to do with the username (anonymous) and the password (email address). I'll let you know if I solve this one.