after many months of smooth operation, I went to update Debian to the final stable version of 6. I ran aptitude, selected update, looked to see if there were any obvious package problems, none turned up. during upgrade, mysql failed to restart. I have attempted to get mysql re-instealled but dpkg is failing with a dependency error Here's the output of my recent apt-get attempt: Code: /install_ispconfig# apt-get install mysql-server mysql-client libmysqlclient-dev Reading package lists... Done Building dependency tree Reading state information... Done mysql-client is already the newest version. mysql-server is already the newest version. The following package was automatically installed and is no longer required: libmysqlclient15off Use 'apt-get autoremove' to remove them. The following packages will be REMOVED: libmysqlclient15-dev The following NEW packages will be installed: libmysqlclient-dev 0 upgraded, 1 newly installed, 1 to remove and 0 not upgraded. 2 not fully installed or removed. Need to get 3,113 kB of archives. After this operation, 12.4 MB disk space will be freed. Do you want to continue [Y/n]? Y Get:1 http://mirrors.kernel.org/debian/ stable/main libmysqlclient-dev i386 5.1.49-3 [3,113 kB] Fetched 3,113 kB in 2s (1,207 kB/s) (Reading database ... 49083 files and directories currently installed.) Removing libmysqlclient15-dev ... Processing triggers for man-db ... Selecting previously deselected package libmysqlclient-dev. (Reading database ... 48994 files and directories currently installed.) Unpacking libmysqlclient-dev (from .../libmysqlclient-dev_5.1.49-3_i386.deb) ... Processing triggers for man-db ... Setting up mysql-server-5.1 (5.1.49-3) ... Stopping MySQL database server: mysqld. Starting MySQL database server: mysqld . . . . . . . . . . . . . . failed! invoke-rc.d: initscript mysql, action "start" failed. dpkg: error processing mysql-server-5.1 (--configure): subprocess installed post-installation script returned error exit status 1 dpkg: dependency problems prevent configuration of mysql-server: mysql-server depends on mysql-server-5.1; however: Package mysql-server-5.1 is not configured yet. dpkg: error processing mysql-server (--configure): dependency problems - leaving unconfigured Setting up libmysqlclient-dev (5.1.49-3) ... configured to not write apport reports configured to not write apport reports Errors were encountered while processing: mysql-server-5.1 mysql-server E: Sub-process /usr/bin/dpkg returned an error code (1) As you can see it appears to be stopping mysql, then restarting before configuring, therefore it fails. is apt-get purge the recommended fix?