Version: (using KDE 4.1.2) OS: Linux Installed from: Ubuntu Packages Dolphin doesn't care about the port set in ~/.ssh/config. Thus you always have to use sftp://domain:port if the server doesn't use port 22 for ssh.
Same problem here, on a Debian-based system (KDE 3.5.9). I have defined port numbers in /etc/ssh/ssh_config, and they have no effect. This is not a serious problem for me, but oft-recurring irritation.
*** This bug has been marked as a duplicate of bug 99708 ***