Again an "FTP error"

Hi,

A few days ago I started using DW 8, after several years of successfull use of
DW 3. The reason I updated is mainly because of the sftp option of the more
recent versions.

Unfortunately, I experienced since the beginning an "ftp error" when I try to
connect or test the connection. Also the "test connection" button gives me the
same error.

I use sftp connection to connect to my server.
I checked/unchecked all the boxes (use passive ftp etc.) I found with no
success.
I can connect to the same site using CoreFTP, a freeware for ftp connection
I can connect to another site using the same DW8 on the same computer (running
XP).
I switched off the firewall (Zonealarm) on the client.
I switched off the firewall on the server (suse 9.2, Apache 2.x).
My Windows firewall is always off.
I have Norton Antivirus and I don't want to qui it for safety reason. BTW I do
not understand why the connection should work with a server but not with
another when Norton is on.

I'm orrified because reading in this forum I understood this is an issue with
Dreamweaver that has never been seriously solved by Macromedia.

I wrote a few days ago to the Macromedia assistance but never received any
answer. I also submitted this same message in an older thread but received no
comments as well. Sorry for repeating the message

Cheers