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I couldn't reproduce this upgrading from 5.1 5.1.41-3ubuntu12 to 5.1.66-0ubuntu0.10.04.1. I created a MyISAM table, upgraded, and the database and table are still there. We need to confirm that this affects other users, either by determining the exact steps to reproduce this issue, or by seeing other reports (or "affects me too" on this bug). Are you able to pin down steps to reproduce this, please? If you can, then please comment and change the status of this bug back to New. ** Changed in: mysql-dfsg-5.1 (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1075484 Title: upgrade of mysql-server-5.1 to 5.1.66-0ubuntu0.10.04.1 removed InnoDB datafiles To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mysql-dfsg-5.1/+bug/1075484/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs