Same thing happens if I upgrade to 5.5: root@miho:/home/mrten# apt-get install percona-server-client- percona-server-server- percona-server-client-5.5 percona-server-server-5.5 Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: libhtml-template-perl Use 'apt-get autoremove' to remove them. The following extra packages will be installed: libaio1 libmysqlclient18 percona-server-common-5.5 Suggested packages: tinyca The following packages will be REMOVED: percona-server-client percona-server-client-5.1 percona-server-common percona-server-server percona-server-server-5.1 The following NEW packages will be installed: libaio1 libmysqlclient18 percona-server-client-5.5 percona-server-common-5.5 percona-server-server-5.5 0 upgraded, 5 newly installed, 5 to remove and 0 not upgraded. Need to get 55.8MB/57.8MB of archives. After this operation, 24.0MB disk space will be freed. Do you want to continue [Y/n]? Get:1 http://repo.percona.com/apt/ lucid/main percona-server-common-5.5 5.5.23-rel25.3-240.lucid [2,740B] Get:2 http://repo.percona.com/apt/ lucid/main percona-server-client-5.5 5.5.23-rel25.3-240.lucid [19.9MB] Get:3 http://repo.percona.com/apt/ lucid/main percona-server-server-5.5 5.5.23-rel25.3-240.lucid [35.9MB] Fetched 55.8MB in 4min 8s (225kB/s) Preconfiguring packages ... (Reading database ... 43013 files and directories currently installed.) Removing percona-server-client ... Removing percona-server-server ... Removing percona-server-server-5.1 ... * Stopping MySQL (Percona Server) mysqld [ OK ] Removing percona-server-client-5.1 ... Removing percona-server-common ... Processing triggers for man-db ... Selecting previously deselected package libaio1. (Reading database ... 37583 files and directories currently installed.) Unpacking libaio1 (from .../libaio1_0.3.107-3ubuntu2_amd64.deb) ... Selecting previously deselected package libmysqlclient18. Unpacking libmysqlclient18 (from .../libmysqlclient18_5.5.23-rel25.3-240.lucid_amd64.deb) ... Selecting previously deselected package percona-server-common-5.5. Unpacking percona-server-common-5.5 (from .../percona-server-common-5.5_5.5.23-rel25.3-240.lucid_amd64.deb) ... Selecting previously deselected package percona-server-client-5.5. Unpacking percona-server-client-5.5 (from .../percona-server-client-5.5_5.5.23-rel25.3-240.lucid_amd64.deb) ... Selecting previously deselected package percona-server-server-5.5. Unpacking percona-server-server-5.5 (from .../percona-server-server-5.5_5.5.23-rel25.3-240.lucid_amd64.deb) ... Processing triggers for install-info ... install-info: warning: no info dir entry in `/usr/share/info/mysql.info.gz' Processing triggers for man-db ... Setting up libaio1 (0.3.107-3ubuntu2) ... Setting up libmysqlclient18 (5.5.23-rel25.3-240.lucid) ... Setting up percona-server-common-5.5 (5.5.23-rel25.3-240.lucid) ... Setting up percona-server-client-5.5 (5.5.23-rel25.3-240.lucid) ... Setting up percona-server-server-5.5 (5.5.23-rel25.3-240.lucid) ... Configuration file `/etc/mysql/debian-start' ==> Modified (by you or by a script) since installation. ==> Package distributor has shipped an updated version. What would you like to do about it ? Your options are: Y or I : install the package maintainer's version N or O : keep your currently-installed version D : show the differences between the versions Z : background this process to examine the situation The default action is to keep your current version. *** debian-start (Y/I/N/O/D/Z) [default=N] ? d Configuration file `/etc/mysql/debian-start' ==> Modified (by you or by a script) since installation. ==> Package distributor has shipped an updated version. What would you like to do about it ? Your options are: Y or I : install the package maintainer's version N or O : keep your currently-installed version D : show the differences between the versions Z : background this process to examine the situation The default action is to keep your current version. *** debian-start (Y/I/N/O/D/Z) [default=N] ? y Installing new version of config file /etc/mysql/debian-start ... Installing new version of config file /etc/init.d/mysql ... * Stopping MySQL (Percona Server) mysqld [ OK ] * Starting MySQL (Percona Server) database server mysqld [fail] invoke-rc.d: initscript mysql, action "start" failed. dpkg: error processing percona-server-server-5.5 (--configure): subprocess installed post-installation script returned error exit status 1 Processing triggers for libc-bin ... ldconfig deferred processing now taking place Errors were encountered while processing: percona-server-server-5.5 [ Rootkit Hunter version 1.3.6 ] File updated: searched for 162 files, found 131 E: Sub-process /usr/bin/dpkg returned an error code (1) root@miho:/home/mrten# vi /var/lib/dpkg/info/percona-server-server-5.5.postinst root@miho:/home/mrten# apt-get install -f Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: libhtml-template-perl Use 'apt-get autoremove' to remove them. 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 1 not fully installed or removed. After this operation, 0B of additional disk space will be used. Setting up percona-server-server-5.5 (5.5.23-rel25.3-240.lucid) ... * Stopping MySQL (Percona Server) mysqld [ OK ] Processing triggers for libc-bin ... ldconfig deferred processing now taking place [ Rootkit Hunter version 1.3.6 ] File updated: searched for 162 files, found 131