everest:/var/cache/apt/archives# apt-get install apache2
Reading Package Lists... Done
Building Dependency Tree... Done
apache2 is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
3 not fully installed or removed.
Need to get 0B of archives.
After unpacking 0B of additional disk space will be used.
Setting up apache2-common (2.0.51-2) ...
dpkg: error processing apache2-common (--configure):
 subprocess post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of apache2-mpm-worker:
 apache2-mpm-worker depends on apache2-common (= 2.0.51-2); however:
  Package apache2-common is not configured yet.
dpkg: error processing apache2-mpm-worker (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of apache2:
 apache2 depends on apache2-mpm-worker (= 2.0.51-2) | apache2-mpm-prefork (= 2.0.51-2) | apache2-mpm-perchild (= 2.0.51-2); however:
  Package apache2-mpm-worker is not configured yet.
  Package apache2-mpm-prefork is not installed.
  Package apache2-mpm-perchild is not installed.
dpkg: error processing apache2 (--configure):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 apache2-common
 apache2-mpm-worker
 apache2
E: Sub-process /usr/bin/dpkg returned an error code (1)