Problem with upload

[locom]

Hi,
I've got a problem with uploading.

When I try to upload a document,
I drag this one over the Cyberduck's window,
At this time, I have the mouse with (+) icon,
And then I drop the file
It's at this moment that the problem appears.

Before the uploading starts, Cyberduck takes a long time ! It's looking to find something, but there is no error...
After the long waiting time, upload starts, and during it there is also no problem.
I tried to delete preferences, I tried with bookmarks, manual connexion, I always have the same problem.
One tip, when I use an external editor like bbedit, when I saved a document the upload starts immediately !!!
I don't understand...

Please, some help.
Loris