I use gFTP every couple of hours at least on my RH9 system to/from my domain(s) host, with terrific success.
I'm using v. 2.0.14 (not sure if that is the latest or not), but it flat out works.
What error messages are you getting in the bottom panel, as it conects or attempts to connect?
Are you sure you have the default protocol set to FTP?
Have you tried using the IP# vs. the domain name?
Are you sure you have the cortrect real path to the public_html (or whatever your directory on the server is called) set in the right hand upper box? Should be like /usr/home/username/www or close to that.
I find using passive is better, and be sure to use binary vs. ascii when appropriate.
If none of this helps, maybe an upgrade / re-install is in order there?