我设法打破了我的包管理。如果我尝试升级，我会得到：
$ sudo apt-get dist-upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these.
The following packages have unmet dependencies:
libapt-pkg4.12 : Breaks: libapt-pkg4.12:i386 (!= 0.8.16~exp12ubuntu10.3) but 0.8.16~exp12ubuntu10.2 is installed
libapt-pkg4.12:i386 : Breaks: libapt-pkg4.12 (!= 0.8.16~exp12ubuntu10.2) but 0.8.16~exp12ubuntu10.3 is installed
E: Unmet dependencies. Try using -f.
然后我尝试遵循 apt-get 建议：
$ sudo apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... …