dpkg: dependency problems and policy

# apt-cache policy paste

apt-cache policy libasterisk-agi-perl
libasterisk-agi-perl:
  Installed: (none)
  Candidate: 1.01-2
  Version table:
     1.01-2 0
        500 http://br.archive.ubuntu.com/ubuntu/ precise/universe amd64 Packages

apt-cache policy linux-headers-3.2.0-56-generic
linux-headers-3.2.0-56-generic:
  Installed: 3.2.0-56.86
  Candidate: 3.2.0-56.86
  Version table:
 *** 3.2.0-56.86 0
        500 http://br.archive.ubuntu.com/ubuntu/ precise-updates/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu/ precise-security/main amd64 Packages
        100 /var/lib/dpkg/status


root@ubuntu:~# apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following extra packages will be installed:
  linux-headers-server linux-server
The following packages will be upgraded:
  linux-headers-server linux-server
2 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
2 not fully installed or removed.
Need to get 0 B/3996 B of archives.
After this operation, 0 B of additional disk space will be used.
Do you want to continue [Y/n]?
dpkg: dependency problems prevent configuration of linux-headers-server:
 linux-headers-server depends on linux-headers-3.2.0-54-generic; however:
  Package linux-headers-3.2.0-54-generic is not installed.
dpkg: error processing linux-headers-server (--configure):
 dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
                                                                                                          dpkg: dependency problems prevent configuration of linux-server:
 linux-server depends on linux-image-server (= 3.2.0.54.64); however:
  Version of linux-image-server on system is 3.2.0.56.66.
 linux-server depends on linux-headers-server (= 3.2.0.54.64); however:
  Package linux-headers-server is not configured yet.
dpkg: error processing linux-server (--configure):
 dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
                                                                                                          Errors were encountered while processing:
 linux-headers-server
 linux-server
E: Sub-process /usr/bin/dpkg returned an error code (1)