Blogger has suffered a security intrusion by a "haX0r." We have all the data that was changed backed up within a couple hours of the attack, so we can have things pretty much back to normal soon. Of course, we're assessing the situation as thoroughly as possible to make sure it doesn't happen again. Also, if you store your FTP login information in Blogger, it wouldn't hurt to change that on your serverthough it is unlikely that information was accessed. Sorry for the inconvenience.
Update: We have found the cause of the vulnerability and have patched it. Everything is back restored and back online with the exception of the API server and bSTATS.