The following packages have unmet dependencies:
 apache2 : Depends: apache2-bin (= 2.4.6-3+debphp.org~precise+1) but it is not going to be installed
           Depends: apache2-data (= 2.4.6-3+debphp.org~precise+1) but it is not going to be installed
 libapache2-mod-php5 : Depends: apache2-mpm-prefork (> 2.0.52) but it is not going to be installed or
                                apache2-mpm-itk but it is not going to be installed
                       Depends: apache2.2-common but it is not going to be installed
 libapache2-modsecurity : Depends: apache2.2-common but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).