Starting Varkon in Terminal.app results in the following error:
/varkon: line 99: 9681 Bus error $VARKON_BIN/xvarkon -GLOBAL -i$VARKON_INI/linux
The work around is to start Varkon in an X11.app xterm window. Apparently there is a problem trying to start X11 from Terminal.app.
The platform is a dual 1.73GHz PowerPC G4 Quicksilver running MacOS 10.5.8.