dri3s…i had the same problem. after pulling my hair out for 3 hours i finally figured it out. log into your admin, and go to the Users section. then click on Authors and Users. If you have any users that are not supposed to be there, then delete them.
i believe when you do a blogger import, it creates a user with no name and with an email address of [email protected] or something like that. for some quirky reason, that causes posts to show up as Anonymous.
