mod_auth_mysql is not compatible with apache 2.4 and it would appear the upstream developer has no interest in currently updating it to apache 2.4 and may no longer be maintained:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=666826 I would go with faiello-s 's suggestion and move on to another solution such as his suggested mod_dbd ** Bug watch added: Debian Bug tracker #666826 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=666826 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to software-center in Ubuntu. https://bugs.launchpad.net/bugs/1243076 Title: libapache2-mod-auth-mysql is missing in 13.10 amd64 Status in “software-center” package in Ubuntu: Confirmed Bug description: When I search for "libapache2-mod-auth-mysql" I get two results listed: a) libapache2-mod-auth-mysql b) libapache2-mod-auth-mysql:i386 When I click on the "more information"-button next to one of them, it states: "Not found. There is no such package »libapache2-mod-auth-mysql« in your current software sources.". (Translated from german.) That might even be the reason the update from 13.04 didn't finished yesterday, because I use/used this package in my apacha2's vhost config. So apaches configure check stumbeld upon invalid configuration, and the installation process stopped. This page btw states that there is such a package: https://launchpad.net/ubuntu/saucy/+package/libapache2-mod-auth-mysql -- lsb_release -rd Description: Ubuntu 13.10 Release: 13.10 LC_ALL=C apt-cache policy libapache2-mod-auth-mysql libapache2-mod-auth-mysql: Installed: (none) Candidate: (none) Version table: 4.3.9-13.1ubuntu1 0 100 /var/lib/dpkg/status ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: software-center 13.10-0ubuntu1 ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3 Uname: Linux 3.11.0-12-generic x86_64 ApportVersion: 2.12.5-0ubuntu2 Architecture: amd64 Date: Tue Oct 22 09:29:26 2013 ExecutablePath: /usr/share/software-center/software-center InstallationDate: Installed on 2011-11-10 (711 days ago) InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1) InterpreterPath: /usr/bin/python2.7 MarkForUpload: True PackageArchitecture: all ProcEnviron: LANGUAGE=de_DE:en PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=de_DE.UTF-8 SHELL=/bin/bash SourcePackage: software-center UpgradeStatus: Upgraded to saucy on 2013-10-21 (0 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/software-center/+bug/1243076/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp