rgotten@myplasticare:~$ sudo apt-get -y install apache2
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
  dbconfig-common libt1-5 wwwconfig-common php5-common javascript-common libjs-mootools
Use 'apt-get autoremove' to remove them.
The following extra packages will be installed:
  apache2-mpm-event apache2.2-bin apache2.2-common libssl0.9.8 php5-common
Suggested packages:
  apache2-doc apache2-suexec apache2-suexec-custom php5-suhosin
The following packages will be REMOVED:
  apache2-mpm-prefork libapache2-mod-php5 php5 php5-gd php5-mcrypt php5-mysql phpmyadmin
The following NEW packages will be installed:
  apache2-mpm-event
The following packages will be upgraded:
  apache2 apache2.2-bin apache2.2-common libssl0.9.8 php5-common
5 upgraded, 1 newly installed, 7 to remove and 226 not upgraded.
1 not fully installed or removed.
Need to get 3,092kB of archives.
After this operation, 20.6MB disk space will be freed.
WARNING: The following packages cannot be authenticated!
  libssl0.9.8 apache2 apache2.2-common apache2.2-bin apache2-mpm-event php5-common
E: There are problems and -y was used without --force-yes