Some users are having trouble publishing posts on their FTP-hosted blogs. We're looking into this now and will post an update once we have more info.
Thanks for your patience.
Update: As of 3pm PST, we have identified the root cause and expect a fix to be implemented within 2 hours.
Update #2: This has been fixed. We apologize again for the interruption in service.
Update #3: As of Saturday morning, some users are reporting ongoing FTP-related issues. We are aware of these reports and are actively trying to isolate and correct them. We will post an update as soon as we have more information.