unknown cronjob reports unclear error

[Ben]

Every 30 minutes I get a new system mail from:

Cron <root@homesrv> [ -x /usr/lib/php5/maxlifetime ] && [ -d /var/lib/php5 ] && find /var/lib/php5/ -depth -mindepth 1 -maxdepth 1 -type f -cmin +$(/usr/lib/php5/maxlifetime) ! -execdir fuser -s {} 2>/dev/null \; -delete

With this text:

PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php5/20090626/pam_auth.so' - /usr/lib/php5/20090626/pam_auth.so: cannot open shared object file: No such file or directory in Unknown on line 0
PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php5/20090626/xmlrpc.so' - /usr/lib/php5/20090626/xmlrpc.so: cannot open shared object file: No such file or directory in Unknown on line 0

Using Ubuntu 12.04 Server. I have no idea which cron triggers this nor what goes wrong. I asume it is one of the system default cron jobs.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: php5 (not installed)
ProcVersionSignature: Ubuntu 3.2.0-59.90-generic 3.2.54
Uname: Linux 3.2.0-59-generic x86_64
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: amd64
Date: Fri Feb 21 08:53:34 2014
InstallationMedia: Ubuntu-Server 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120817.3)
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: php5
UpgradeStatus: No upgrade log present (probably fresh install)

[Jörg Frings-Fürst (jff-de)]

Hi,

please read https://bugs.launchpad.net/ubuntu/+source/php5/+bug/875262

There is a quick workaround described

Jörg