I tried to update my server through apt-get update, also ispconfig installation got that error. Code: The following packages have been kept back: linux-image-2.6-686 0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded. ispconfig:/tmp/ispconfig3_install/install# apt-get phpmyadmin E: Invalid operation phpmyadmin ispconfig:/tmp/ispconfig3_install/install# apt-get install phpmyadmin Reading package lists... Done Building dependency tree Reading state information... Done The following NEW packages will be installed: phpmyadmin 0 upgraded, 1 newly installed, 0 to remove and 1 not upgraded. Need to get 2884kB of archives. After this operation, 10.4MB of additional disk space will be used. Get:1 http://security.debian.org lenny/updates/main phpmyadmin 4:2.11.8.1-5+lenny3 [2884kB] Fetched 2884kB in 3s (953kB/s) Preconfiguring packages ... Selecting previously deselected package phpmyadmin. (Reading database ... 36262 files and directories currently installed.) Unpacking phpmyadmin (from .../phpmyadmin_4%3a2.11.8.1-5+lenny3_all.deb) ... Processing triggers for man-db ... Setting up phpmyadmin (4:2.11.8.1-5+lenny3) ... chmod: cannot access `/var/lib/phpmyadmin/config.inc.php': No such file or directory dpkg: error processing phpmyadmin (--configure): subprocess post-installation script returned error exit status 1 Errors were encountered while processing: phpmyadmin E: Sub-process /usr/bin/dpkg returned an error code (1)