How can we get aound this contention over /opt/local/bin/su, since both heimdal and coreutils claim it as theirs? 

Error: Activating heimdal 0.7.2_0 failed: Image error: /opt/local/bin/su is being used by the active coreutils port.  Please deactivate this port first, or use the -f flag to force the activation.

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Paul Beard
words: http://paulbeard.org/wordpress
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Are you trying to win an argument or solve a problem?