Comment 3 for bug 281232

I'd like to reopen this issue. 16 years later, there are still plenty of *informed* users who change their sources.list, run a dist-upgrade to upgrade the release, and break their system. They then come to the desktop team asking for help to rescue their broken system.

Even if we don't block them completely, apt should display a bit fat warning informing the users that what they are going to do is definitely not recommended, are they sure they want to proceed with the dist-upgrade.