sudo port -f uninstall lame: DOES NOT UNINSTALL DEPENDENCIES

[Scott]

The `-f' option does not work properly -- it is supposed to kill
dependencies, too.

b8$ port -f uninstall lame
--->  Deactivating lame 3.98.2_0
Error: port uninstall failed: error deleting \
"/opt/local/share/man/man1/lame.1.gz": permission denied
b9$ sudo port -f uninstall lame
Password:
--->  Deactivating lame 3.98.2_0
--->  Uninstalling lame 3.98.2_0

[Then I checked the directory: all the ncurses and ncursesw files are
still there.  So I try again ...]

b11$ sudo port -f uninstall lame
Error: port uninstall failed: Registry error: lame not \
registered as installed.

[Damn.  So I do it manually ...]

b12$ sudo port uninstall ncurses
--->  Deactivating ncurses 5.7_0
--->  Uninstalling ncurses 5.7_0
b13$ sudo port uninstall ncursesw
--->  Deactivating ncursesw 5.7_0
--->  Uninstalling ncursesw 5.7_0
b14$

Is `-f' supposed to actually work?