Comment 8 for bug 944040

I'll try to provide some additional informations for this bug:

1) Remmina always fails with following errors:
    a) started from console/terminal (to see some additional info):
myUsername@myhost:~$ remmina
Remmina plugin VNC (type=Protocol) registered.
Remmina plugin VNCI (type=Protocol) registered.
Remmina plugin RDP (type=Protocol) registered.
Remmina plugin RDPF (type=File) registered.
Remmina plugin RDPS (type=Preference) registered.
Remmina plugin SFTP (type=Protocol) registered.
Remmina plugin SSH (type=Protocol) registered.
unable to connect to (null):3389
Error: protocol security negotiation failure

    b) shows error window:
"Unable to connect to RDP server dc-1.myDomain.cz"

which corresponds to last two lines from a)
"
unable to connect to (null):3389
Error: protocol security negotiation failure
"

2) Version and configuration settings:

   a) Ubuntu versions (it doesn't matter):
        - 11.10
        - 12.04

   b) Remmina/FreeRDP:
        - Remmina 1.x
        - FreeRDP 1.x

   b) Remmina RDP settings:
        - Server (Tab/Basic):
        dc-1.myDomain.cz
        - Security (Tab/Advanced):
        Negotiate (Default)

Note:
It doesn't matter what I choose in Security - Remmina defaults (Negotiate) or NLA, TLS or RDP - Remmina always fails/refuse connection.