When you apt-get remove --purge mysql-server-4.1, debconf should ask you a question on whether to remove all data.
** Changed in: mysql-dfsg-4.1 (Ubuntu) Status: Unconfirmed => Rejected -- downgrading mysql-server from 5.0 to 4.1 fails on install https://bugs.launchpad.net/bugs/36868 You received this bug notification because you are a member of Ubuntu Bugs, which is a direct subscriber. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs