vsftp
Note to self: Things to check next time Blogger quits working with my FTP server.

vsftp - Ok the problem was that my public IP address changed earlier this week.

It was xx.xxx.xxx.183 and it is now xx.xxx.xxx.155.

Vsftp requires my IP address to be in

/etc/vsftp.conf

pasv_address = xx.xxx.xxx.155

Also make sure the passive port range is being forwarded correctly by the firewall.

pasv_min_port=
pasv_max_port=

Find out more about vsftp here.