i've added the workaround for the pwc agc/prefs bug from pf to pdep. you can update from darcs at
http://zwizwa.goto10.org/darcs/pdp-12
or get the snapshot at
http://zwizwa.goto10.org/darcs/pdp-12/tgz/pdp-0.12.5-test-5.tar.gz
since nobody seems to complain, this will probably be renamed to official 0.12.5