I have a relatively new install of Ubuntu 12.04. The php version is 5.3, so I just followed this question to upgrade to 5.5: How do I install different (upgrade or downgrade) PHP version in still supported Ubuntu release?
When I ran the final command though (
sudo apt-get upgrade), it gave me the following output:
Reading package lists... Done Building dependency tree Reading state information... Done The following packages have been kept back: apache2 apache2-mpm-prefork apache2.2-bin libapache2-mod-php5 libjson0 php5-cli php5-common php5-mysql 0 upgraded, 0 newly installed, 0 to remove and 8 not upgraded.
Why does it 'keep packages back'?