Question regarding upgrading jed

[Low Kian Seong]

Dear all,

When i try to upgrade jed, I get this error :


===>  libslang2-2.0.6 conflicts with installed package(s):
      libslang-1.4.9

      They install files into the same place.
      Please remove them first with pkg_delete(1).
*** Error code 1

Stop in /usr/ports/devel/libslang2.
*** Error code 1

Stop in /usr/ports/devel/libslang2.
*** Error code 1

Stop in /usr/ports/editors/jed.
** Command failed [exit code 1]: /usr/bin/script -qa /tmp/portupgrade85756.0
make

Is this some bug in the port ? Isn't portupgrade supposed to handle
dependency problems as well ?

Thank you in advance.