慚愧啊，在ubuntu11.10中，安裝mysql5.5時，遇到奇葩 的問題，花費了不止3個小時。網上查看了很多資料衆說紛紜，一一嘗試卻沒有解決什麼問題，在幾近絕望的時候，看到如下這篇文章，解決了燃眉之急。
轉自：http://hi.baidu.com/tysonabc/item/691008ccadba5346a8ba944f
dpkg: error processing mysql-server (--configure): dependency problems - leaving unconfigured
start: Job failed to start
invoke-rc.d: initscript mysql, action "start" failed.
dpkg: error processing mysql-server-5.5 (--configure):
subprocess installed post-installation script returned error exit status 1
dpkg: dependency problems prevent configuration of mysql-server:
mysql-server depends on mysql-server-5.5; however:
Package mysql-server-5.5 is not configured yet.
dpkg: error processing mysql-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:
mysql-server-5.5
mysql-server
E: Sub-process /usr/bin/dpkg returned an error code (1)
解決方法:
刪除mysql前 先刪除一下 /var/lib/mysql 還有 /etc/mysql
sudo rm /var/lib/mysql/ -R
sudo rm /etc/mysql/ -R
sudo apt-get autoremove mysql* --purge
sudo apt-get remove apparmor
sudo apt-get install mysql-server mysql-common