I have been trying to get on my servers using FileZilla and Cyberduck but it’s not working. They were working a couple of weeks ago. What’s going on? Is there something in Mac OS X LION that causes a problem?
Did you update Lion or something which might have caused the incompatibility?
In many cases, the best FTP is going to be your Finder. Try using that.
FileZilla work great last week. 
More then likely FileZilla and Cyberduck aren’t compatible with Lion, yet.
[I could be wrong though.]