root@ubuntu:/home/httpd-2.2.21# apt-get remove httpd
Reading package lists... Done
Building dependency tree
Reading state information... Done
Virtual packages like 'httpd' can't be removed
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
 apache2.2-bin : Depends: libaprutil1-ldap but it is not going to be installed
 checkinstall : Depends: dpkg-dev but it is not going to be installed
 libaprutil1-dbd-mysql : Depends: libmysqlclient16 (>= 5.1.21-1) but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).