package apache2 2.4.4-6ubuntu4 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[Cary]

I can't do any of the apt-get commands anymore and apt-get -f install doesn't work.

ProblemType: Package
DistroRelease: Ubuntu 13.10
Package: apache2 2.4.4-6ubuntu4
ProcVersionSignature: Ubuntu 3.10.0-3.12-generic 3.10.1
Uname: Linux 3.10.0-3-generic x86_64
Apache2ConfdDirListing: ['fqdn', 'javascript-common.conf']
Apache2Modules:
 Error: command ['/usr/sbin/apachectl', '-D DUMP_MODULES'] failed with exit code 1: apache2: Syntax error on line 140 of /etc/apache2/apache2.conf: Syntax error on line 1 of /etc/apache2/mods-enabled/php5.load: Cannot load /usr/lib/apache2/modules/libphp5.so into server: /usr/lib/apache2/modules/libphp5.so: undefined symbol: unixd_config
 Action '-D DUMP_MODULES' failed.
 The Apache error log may have more information.
ApportVersion: 2.11-0ubuntu1
Architecture: amd64
Date: Thu Jul 18 11:22:50 2013
DuplicateSignature: package:apache2:2.4.4-6ubuntu4:subprocess installed post-installation script returned error exit status 1
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationDate: Installed on 2013-07-16 (2 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130630)
MarkForUpload: True
SourcePackage: apache2
Title: package apache2 2.4.4-6ubuntu4 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #1202653, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.