I'm using the graphic version but it does not run as a screen saver? It sits there in the system tray unless I pull it up to look at the protein. I just turn off the monitor and leave the computer on to fold.
I tried the graphical version and thought the pictures were cool, but then switched all my processing to the console (I had to do it on my dual to use both CPUs). I found it was so easy, that I put it on my other processors. I like that if my workstation reboots, I am pretty sure the process gets started and does it's work. I might be wrong. I will do some checking.