Octave/Gnuplot Problem when installing Mac OS 10.6.6

[Jordan Ellis]

I recently  upgraded my Mac OS from 10.6.3  to 10.6.6.  Until the upgrade I 
have successfully used Octave for calculations and plotting without any
problem.
When testing the version of Octave that I have been using (Octave 3.2.3) with  
MacOS 10.6.6
I encountered the following error message when attempting to plot a simple 
graph using the plot function

octave-3.2.3:4> plot(x,y)

dyld: Library not loaded: /usr/X11/lib/libfreetype.6.dylib
  Referenced from: /usr/X11R6/lib/libfontconfig.1.dylib
  Reason: Incompatible library version: libfontconfig.1.dylib requires version 
13.0.0 or later, but libfreetype.6.dylib provides version 10.0.0
/Applications/Gnuplot.app/Contents/Resources/bin/gnuplot: line 71:   834 
Trace/BPT trap          GNUTERM="${GNUTERM}" GNUPLOT_HOME="${GNUPLOT_HOME}" 
PATH="${PATH}" DYLD_LIBRARY_PATH="${DYLD_LIBRARY_PATH}" HOME="${HOME}" 
GNUHELP="${GNUHELP}" DYLD_FRAMEWORK_PATH="${DYLD_FRAMEWORK_PATH}" 
GNUPLOT_PS_DIR="${GNUPLOT_PS_DIR}" DISPLAY="${DISPLAY}" 
GNUPLOT_DRIVER_DIR="${GNUPLOT_DRIVER_DIR}" "${ROOT}/bin/gnuplot-4.2.6" "$@"
error: you must have gnuplot installed to display graphics; if you have gnuplot 
installed in a non-standard location, see the 'gnuplot_binary' function

Do You have any suggestions  on how to correct the problem.  I am using gnuplot 
4.2.6.

          Jordan Ellis