You have mentioned a password that is needed for uninstallation, but you have not given any further information to indicate which program is asking for this password (it may be interchange, for example).
Is interchange installed? Perhaps interchange is blocking the uninstallation of interchange-ui. Perhaps if you remove interchange, it will also be possible for interchange-ui to be uninstalled: sudo aptitude remove interchange interchange-ui (or sudo apt-get autoremove interchange interchange-ui ) In any case, you may have success in removing interchange-ui by following the steps outlined in this article: Dealing with troublesome package upgrades or removals http://www.debian-administration.org/articles/251 In this case, given what you quoted above, you will be looking for the file interchange-ui.postrm in /var/lib/dpkg/info. (This file tries to stop and start interchange, beside doing other things, which is why I made the above interchange-removal suggestion.) One of these ideas may enable you to remove interchange-ui, but neither will solve the bug that you have reported. I think that someone who knows more than I will need to look at it, and any more information you can provide for them will of course be helpful. You may already have done so, but if not you may find it useful to read this article: How to report bugs effectively http://www.chiark.greenend.org.uk/~sgtatham/bugs.html I am assigning this bug to interchange, because it looks like there is a problem that its uninstallation scripts should be able to cope with. ** Changed in: interchange (Ubuntu) Sourcepackagename: None => interchange -- can not unmark package marked for removal https://bugs.launchpad.net/bugs/244732 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs