Reading package lists... Error!
E: Encountered a section with no Package: header
E: Problem with MergeList /var/lib/apt/lists/ftp.sjtu.edu.cn_ubuntu_dists_precise-security_restricted_binary-i386_Packages
E: The package lists or status file could not be parsed or opened.
虽然不知道是怎么回事，但是google出来的结果提示可以按如下方法解决，记录之：
sudo rm /var/lib/apt/lists/* -vf
sudo apt-get update