 neil schemenauer these results are from URL i ve got three sets of spam and ham with about NUMBER messages in each set here s what happens when i enable my latest received header code if you ve still got the summary files please cvs up and try running URL again in the process of generalizing URL you managed to make it skip half the lines wink that is if you ve got n sets you should get n NUMBER n pairs for each error rate you have NUMBER sets so you should get NUMBER pairs of f n rates and NUMBER pairs of f p rates false positive percentages NUMBER NUMBER NUMBER NUMBER tied NUMBER NUMBER NUMBER NUMBER won NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER won NUMBER NUMBER won NUMBER times tied NUMBER times lost NUMBER times total unique fp went from NUMBER to NUMBER false negative percentages NUMBER NUMBER NUMBER NUMBER won NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER won NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER lost NUMBER NUMBER won NUMBER times tied NUMBER times lost NUMBER times total unique fn went from NUMBER to NUMBER looks promising getting NUMBER lines of output for each block would give a clearer picture of course anthony s header counting code does not seem to help it helps my test data too much wink sigh 