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install a clean install of os x and run system updates **only**.
install RadmindTools.pkg from http://rsug.itd.umich.edu/software/radmind/download.html
download [[http://webapps.itcs.umich.edu/radmind/index.php/10.5-desktop-negative.T|10.5-desktop-negative.T]] and save it as /var/radmind/client/10.5-desktop-negative.T
make this file
/var/radmind/client/command.K
p base.T n 10.5-negative-desktop.T
sudo fsdiff -C -c sha1 -o /var/radmind/client/base.T /