On a local network:

Passive (default) FTP mode:
Upload 600KB/s
Download 280KB/s

Active FTP (go in the menu and change the mode)
Doesn't work.
It looks like the client is telling the server to search the data channel on the source port of the control channel.. so it won't work.

And on connection, it's doing strange things (Netbios request, wtf with ftp??)