I am having a similar problem. I have files automaticly uploading via FTP. This works perfectly on my older desktop but on my MBP with mountain lion, the files only display one or two at a time and only show newer files when the first ones are deleted.
The same behavior occures when using the ftp enable script in the terminal app.
Not exactly the same but similar.
Why did apple take the simple FTP toggle away??? My 13 year old Mac wins this battle and remains on the shelf
Where is the anonymous FTP root? I can't configure write access for anonymous and I can't find where to put files for anonymous to read. I intend to have a public facing anonymous temporary storage space; I have a scheduled job so that all files in the share >2 hours old will get deleted, so I'm not worried about abuse.