Comment 16 for bug 574287

WTF. I was uninstalling the ubuntu-mate-desktop task with tasksel (while ubuntu-desktop was still checked in the list), and it removed basically everything. Afterwards all tasks in the tasksel list were unchecked. This is definitely not the expected behavior: when I uncheck a specific task, I don't expect other tasks to be removed as well.

I suggest to disable the package-removal functionality in tasksel. Alternatively, show a big warning when tasksel is about to remove anything. There are lots of warning posts about this behavior of tasksel all over the net, but if the warning does not appear in the application itself, I'm unlikely to see it before it's too late.