Preconfiguring packages ...
dpkg: apache2-common: dependency problems, but removing anyway as you request:
 apache2-mpm-prefork depends on apache2-common (= 2.0.55-4ubuntu4).
(Reading database ... 216398 files and directories currently installed.)
Removing apache2-common ...
 * Stopping apache 2.0 web server...                                            grep: /etc/apache2/mods-enabled/php5.load: No such file or directory
grep: /etc/apache2/mods-enabled/php5.conf: No such file or directory
                                                                         [fail]
invoke-rc.d: initscript apache2, action "stop" failed.
dpkg: error processing apache2-common (--remove):
 subprocess pre-removal script returned error exit status 1
Errors were encountered while processing:
 apache2-common
E: Sub-process /usr/bin/dpkg returned an error code (1)