Thanks for reporting this. Can you try removing the old libmysqlclient18, before installing the new one? This seems to be a conflict with that package, not a bug.
** Changed in: mysql-5.5 (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1179635 Title: package libmysqlclient18 5.5.31-0ubuntu0.13.04.1 failed to install/upgrade: libmysqlclient18:amd64 5.5.30-mariadb1~quantal (Multi-Arch To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mysql-5.5/+bug/1179635/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs