O.k. I checked this again. I went through the steps mentioned before to reproduce the problem.
After installation of mysql-server-5.0 from the apt repository _without_ security updates, the directory conf.d and a file in it, old_passwords.cnf EXISTS! Adding the security repository and then upgrading the package, makes the directory conf.d be DELETED, seemingly be the upgrade/postinstall script, and then, the server fails to start! Nnot only is it wrong in my opinion that a sertver fails to start when an optional directory is missing, that the upgrade process even deletes this directory, without which the server cannot start... strange. Additional info: I made a default desktop install from live cd, not a server install. marking the bug confirmed, as I thoroughly tested it on a clean install. The simplest fix I can imagine would be to change the mysqld start script to ignore the optional directory if not there. ** Changed in: mysql-dfsg-5.0 (Ubuntu) Status: Incomplete => Confirmed -- mysql refuses to start after security update https://bugs.launchpad.net/bugs/305107 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs