SpamBayes includes the unmodified gocr 0.43 binary from:

  http://www-e.uni-magdeburg.de/jschulen/ocr/gocr043.exe 
  md5sum: b21b3c565a185791cf64e546a69b1d55

gocr is distributed under the GPL - please see:

  http://sourceforge.net/projects/jocr

for more information on gocr, or:

  http://spambayes.org

for more information on spambayes.
