This is about the 1.21 version of Webmin that's currently in staging.
A few weeks ago, I used the Upgrade Webmin module that's built into Webmin to upgrade it from 1.08 to 1.20. The upgrade went perfectly.
A few days ago, I tried to upgrade Webmin to the 1.21 version currently in the Backports staging. The result was that Webmin was no longer usable - I couldn't log in, and I couldn't uninstall it with apt-get. I ended up restoring my system from a backup.
If you already upgraded Webmin from inside it - be warned! Don't upgrade it a second time from the repositories.
I haven't tried uninstalling my 1.20 Webmin, but I suppose that's probably the best thing to do before upgrading from the repository.
EDIT - I did manage to uninstall webmin by using the uninstall.sh command suggested on the webmin FAQ. This left broken packages from the initial install from the respositories; a few dpkg -r --force-remove attempts didn't fully clear them out. But installing and then removing from Synaptec seems to have cleared everything out nicely.
Thanks.
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