Please describe the problem:
When trying to connect to some FTP server with Nautilus, Nautilus display an alert saying "Nautilus cannot handle 'ftp' places."

When using the command line "GVFS_DEBUG=1 /usr/lib/gvfs/gvfsd -r" and trying to connect to FTP with Nautilus again, the error can be spotted :

Added new job source 0x9cb8020 (GVfsBackendFtp)
Queued new job 0x9cb9010 (GVfsJobMount)
<-- 220 ProFTPD 1.3.1rc2 Server (ProFTPD Default Installation) [91.121.161.14]
--> FEAT
<-- 211-Features:
 LANG en
 MDTM
 UTF8
 REST STREAM
 SIZE
<-- 211 End
feature MDTM supported
feature UTF8 supported
feature SIZE supported
--> OPTS UTF8 ON
<-- 501 OPTS: UTF8 not understood
error: Opération non prise en charge
send_reply, failed: 1

Connection is possible with previous version of Nautilus/Gvfs, with ftp commande line.

Steps to reproduce:
1. Try to connect to a FTP server with Nautilus or GVFS from command line that miss report UTF8 is supported
2. See that connection failed

Actual results:
The connection process to the FTP server is stopped

Expected results:
I would expect to receive a silent error that does not stop the login process. (The FTP server problem was already present with previous version of gvfs but the connection was not aborded)

Does this happen every time?
Yes, I does happen every time I try to connect such a FTP server

Other information:
This problem has been first reported on Launchpad:
https://bugs.launchpad.net/ubuntu/+source/gvfs/+bug/364084