系统出现错误提示：error brokencount 0 ubuntu 12.04。
解决方案如下：
1： sudo apt-get -f? install
?通过执行这一步找到apt安装包中的错误依赖的包。我的提示信息如下：
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following extra packages will be installed:
pidgin-facebookchat
The following packages will be upgraded:
pidgin-facebookchat
1 upgraded, 0 newly installed, 0 to remove and 271 not upgraded.
1 not fully installed or removed.
Need to get 0 B/39.8 kB of archives.
After this operation, 139 kB of additional disk space will be used.
Do you want to continue [Y/n]? y
dpkg: warning: there's no installed package matching pidgin-facebookchat:amd64
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following extra packages will be installed:
pidgin-facebookchat
The following packages will be upgraded:
pidgin-facebookchat
1 upgraded, 0 newly installed, 0 to remove and 271 not upgraded.
1 not fully installed or removed.
Need to get 0 B/39.8 kB of archives.
After this operation, 139 kB of additional disk space will be used.
Do you want to continue [Y/n]? y
dpkg: warning: there's no installed package matching pidgin-facebookchat:amd64
?从提示信息中发现是 pidgin-facebookchat的问题。所以我尝试把它卸载。
2： sudo apt-get? remove pidgin-facebookchat??? （每个人出现问题的包不一样。）
?
3：执行完成再执行一步检测，sudo apt-get -f? install。此时发现问题已经解决了。