apt-get 依赖问题 Open-SSH Client

Question

这是在 Ubuntu 12.04 服务器上。

尝试运行任何apt-get install（尝试安装不相关的任意包）时出现此错误：

dpkg: dependency problems prevent configuration of openssh-server:
 openssh-server depends on openssh-client (= 1:5.9p1-5ubuntu1.1); however:
  Version of openssh-client on system is 1:5.9p1-5ubuntu1.4.
dpkg: error processing openssh-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 probms prevent configuration of ssh:
 ssh depends on openssh-server; however:
  Package openssh-server is not configured yet.
dpkg: error processing ssh (--configure):
 dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
                                                                                                          Errors were encounter while processing:
 openssh-server
 ssh
E: Sub-process /usr/bin/dpkg returned an error code (1)

安装有问题的客户端版本会导致：

sudo apt-get install openssh-client=1:5.9p1-5ubuntu1.1
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Version '1:5.9p1-5ubuntu1.1' for 'openssh-client' was not found

在缺乏背景知识的情况下尝试修复它的各种尝试都失败了，例如

dpkg-reconfigure -a
apt-get -f install

有人可以就如何解决问题提出建议，可能需要我方提供更多必要的信息吗？

openssh 更新（我猜失败了）如何恢复或失去焦点，以便我能够安装其他软件包？

编辑：

的输出apt-cache policy openssh-client是：

openssh-client:
  Installed: 1:5.9p1-5ubuntu1.4
  Candidate: 1:5.9p1-5ubuntu1.4
  Version table:
 *** 1:5.9p1-5ubuntu1.4 0
        500 http://archive.ubuntu.com/ubuntu/ precise-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     1:5.9p1-5ubuntu1.3 0
        500 http://security.ubuntu.com/ubuntu/ precise-security/main amd64 Packages
     1:5.9p1-5ubuntu1 0
        500 http://archive.ubuntu.com/ubuntu/ precise/main amd64 Packages

只是为了完整性/etc/apt/sources.list：

deb http://archive.ubuntu.com/ubuntu precise main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu precise-updates main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu precise-backports main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu precise-security main restricted universe multiverse

Answer 1

只需删除这些包即可让您apt用于其他包。在终端中执行此命令。

sudo apt-get remove openssh-server openssh-client --purge && sudo apt-get autoremove && sudo apt-get autoclean && sudo apt-get update

然后重新安装 openssh 服务器和客户端。

sudo apt-get install openssh-server openssh-client