I have a Red Had Enterprise Linux 5 and a CentOS 5 box, both of which I am trying to configure to automatically connect to a synergy server on startup. I have followed the guide
Just want to add: when following Matt's advice about putting a call to /usr/bin/synergyc in /etc/gdm/Init/Default, ensure you don't use the -f option there or the script will never exit and you won't be able to log in.