Ansible installs php5filter instead of php5

I have a strange problem with Ansible that I use to install / update / manage my webservers.

I have an installation script that is supposed to make sure that I always have the latest PHP5 module in my Debian 6 / Apache 2 system:

  - name: install apache2 and php5    action: apt pkg=$item state=latest    with_items:      - apache2      - php5      - libapache2-mod-php5      - php5-curl      [...]    notify:      - restart apache

It usually works great, but once every few runs I end up with mod-php5-filter in my apache instead of mod-php5 - which is bad for various reasons (mainly for breaking everything).

All I have to do then is run my installation script again - and I'm back to mod-php5

Any ideas? Anything that I might be doing wrong?