illwolf@mit[~]$ dpkg --purge apache2.2-common
dpkg: requested operation requires superuser privilege
illwolf@mit[~]$ sudo dpkg --purge apache2.2-common
dpkg: dependency problems prevent removal of apache2.2-common:
 apache2-mpm-worker depends on apache2.2-common (= 2.2.3-3.3).
dpkg: error processing apache2.2-common (--purge):
 dependency problems - not removing
Errors were encountered while processing:
 apache2.2-common
illwolf@mit[~]$