Hello, (a novice question) I installed a package (py25-matplotlib), had some trouble with using it, then did a port selfupdate, then upgraded the package. In the process, a number of packages were deactivated. For example, it looks like I now have two copies of python25, numpy, 3 copies of libpng, etc. How can I uninstall these now (to clean up and save disk space)? For example port uninstall python25 @2.5.1_2+darwin_8 says that I cannot uninstall this (deactivated) python because other things depend on it. Most of those things are things that I'm actively using (py-readline for example). should I uninstall and reinstall all of these? If so, it seems like upgrading is a bad strategy, one can save work by uninstalling and reinstalling?