Comment 0 for bug 430197

More and more people test devel release of Ubuntu. While we give adequate warnings on the risks of running ubuntu+1 releases sometimes it's not enough.

update-manager has a concept of a "partial upgrade" which seems to be more trouble than it's worth. Perhaps give the user a more descriptive set of options, something like:

a) Wait until later until the archive works itself out.
b) Install stuff, but don't remove anything
c) Do a partial upgrade (and perhaps a scary warning like apt does when you try to remove glibc. "Yes, I recognize that I could explode my machine, do it."

Or perhaps something like "Something bad has happened, go use apt-get" or something that makes it clear that update-manager is confused.