KRDC Logout Question

Today I set up a VNC server on a spare computer. Both the server, and the computer I control it from, are running Opensuse 11.2. I was wondering about how KRDC handles logouts. On Windows, I used RealVNC, which would allow me to login to the server in the same state I left it. However, on KRDC, when I close the program, it also logs my account off the server, and closes any applications I have open. I am using this server to download large files overnight, which I cannot do so long as it keeps logging me off. Is there a way to change this, so that I can come and go as I please and have the server left unaffected? Any help is much appreciated.